diff --git a/src/macros.rs b/src/macros.rs
index ccab4112..b59278a1 100644
--- a/src/macros.rs
+++ b/src/macros.rs
@@ -23,3 +23,77 @@ macro_rules! impl_enum {
         }
     }
 }
+
+macro_rules! impl_event {
+    ($name:ident, $content_name:ident, $event_type:path) => {
+        impl Event for $name {
+            /// The type of this event's `content` field.
+            type Content = $content_name;
+
+            /// The event's content.
+            fn content(&self) -> &Self::Content {
+                &self.content
+            }
+
+            /// The type of the event.
+            fn event_type(&self) -> EventType {
+                $event_type
+            }
+        }
+    };
+}
+
+macro_rules! impl_room_event {
+    ($name:ident, $content_name:ident, $event_type:path) => {
+        impl_event!($name, $content_name, $event_type);
+
+        impl RoomEvent for $name {
+            /// The unique identifier for the event.
+            fn event_id(&self) -> &EventId {
+                &self.event_id
+            }
+
+            /// Timestamp (milliseconds since the UNIX epoch) on originating homeserver when this event was
+            /// sent.
+            fn origin_server_ts(&self) -> UInt {
+                self.origin_server_ts
+            }
+
+            /// The unique identifier for the room associated with this event.
+            ///
+            /// This can be `None` if the event came from a context where there is
+            /// no ambiguity which room it belongs to, like a `/sync` response for example.
+            fn room_id(&self) -> Option<&RoomId> {
+                self.room_id.as_ref()
+            }
+
+            /// The unique identifier for the user who sent this event.
+            fn sender(&self) -> &UserId {
+                &self.sender
+            }
+
+            /// Additional key-value pairs not signed by the homeserver.
+            fn unsigned(&self) -> Option<&Value> {
+                self.unsigned.as_ref()
+            }
+        }
+    };
+}
+
+macro_rules! impl_state_event {
+    ($name:ident, $content_name:ident, $event_type:path) => {
+        impl_room_event!($name, $content_name, $event_type);
+
+        impl StateEvent for $name {
+            /// The previous content for this state key, if any.
+            fn prev_content(&self) -> Option<&Self::Content> {
+                self.prev_content.as_ref()
+            }
+
+            /// A key that determines which piece of room state the event represents.
+            fn state_key(&self) -> &str {
+                &self.state_key
+            }
+        }
+    };
+}
diff --git a/src/room/name.rs b/src/room/name.rs
index 1d73a736..22aa32ac 100644
--- a/src/room/name.rs
+++ b/src/room/name.rs
@@ -40,7 +40,7 @@ pub struct NameEvent {
     pub state_key: String,
 }
 
-/// The payload of a `NameEvent`.
+/// The payload for `NameEvent`.
 #[derive(Clone, Debug, PartialEq, Serialize)]
 pub struct NameEventContent {
     /// The name of the room. This MUST NOT exceed 255 bytes.
@@ -91,72 +91,47 @@ impl Serialize for NameEvent {
     where
         S: Serializer,
     {
-        let mut state = serializer.serialize_struct("NameEvent", 2)?;
+        let mut len = 6;
+
+        if self.prev_content.is_some() {
+            len += 1;
+        }
+
+        if self.room_id.is_some() {
+            len += 1;
+        }
+
+        if self.unsigned.is_some() {
+            len += 1;
+        }
+
+        let mut state = serializer.serialize_struct("NameEvent", len)?;
 
         state.serialize_field("content", &self.content)?;
+        state.serialize_field("event_id", &self.event_id)?;
+        state.serialize_field("origin_server_ts", &self.origin_server_ts)?;
+
+        if self.prev_content.is_some() {
+            state.serialize_field("prev_content", &self.prev_content)?;
+        }
+
+        if self.room_id.is_some() {
+            state.serialize_field("room_id", &self.room_id)?;
+        }
+
+        if self.unsigned.is_some() {
+            state.serialize_field("unsigned", &self.unsigned)?;
+        }
+
+        state.serialize_field("sender", &self.sender)?;
+        state.serialize_field("state_key", &self.state_key)?;
         state.serialize_field("type", &self.event_type())?;
 
         state.end()
     }
 }
 
-impl Event for NameEvent {
-    /// The type of this event's `content` field.
-    type Content = NameEventContent;
-
-    /// The event's content.
-    fn content(&self) -> &Self::Content {
-        &self.content
-    }
-
-    /// The type of the event.
-    fn event_type(&self) -> EventType {
-        EventType::RoomName
-    }
-}
-
-impl RoomEvent for NameEvent {
-    /// The unique identifier for the event.
-    fn event_id(&self) -> &EventId {
-        &self.event_id
-    }
-
-    /// Timestamp (milliseconds since the UNIX epoch) on originating homeserver when this event was
-    /// sent.
-    fn origin_server_ts(&self) -> UInt {
-        self.origin_server_ts
-    }
-
-    /// The unique identifier for the room associated with this event.
-    ///
-    /// This can be `None` if the event came from a context where there is
-    /// no ambiguity which room it belongs to, like a `/sync` response for example.
-    fn room_id(&self) -> Option<&RoomId> {
-        self.room_id.as_ref()
-    }
-
-    /// The unique identifier for the user who sent this event.
-    fn sender(&self) -> &UserId {
-        &self.sender
-    }
-
-    /// Additional key-value pairs not signed by the homeserver.
-    fn unsigned(&self) -> Option<&Value> {
-        self.unsigned.as_ref()
-    }
-}
-
-impl StateEvent for NameEvent {
-    /// The previous content for this state key, if any.
-    fn prev_content(&self) -> Option<&Self::Content> {
-        self.prev_content.as_ref()
-    }
-
-    /// A key that determines which piece of room state the event represents.
-    fn state_key(&self) -> &str {
-        &self.state_key
-    }
-}
+impl_state_event!(NameEvent, NameEventContent, EventType::RoomName);
 
 impl NameEventContent {
     /// Create a new `NameEventContent` with the given name.
diff --git a/src/room/power_levels.rs b/src/room/power_levels.rs
index 7405fd5a..e205bc08 100644
--- a/src/room/power_levels.rs
+++ b/src/room/power_levels.rs
@@ -1,20 +1,48 @@
 //! Types for the *m.room.power_levels* event.
 
-use std::collections::HashMap;
+use std::{collections::HashMap, convert::TryFrom, str::FromStr};
 
-use js_int::{Int, UInt};
-use ruma_identifiers::UserId;
-use serde::{Deserialize, Serialize};
+use js_int::UInt;
+use ruma_identifiers::{EventId, RoomId, UserId};
+use serde::{ser::SerializeStruct, Deserialize, Serialize, Serializer};
+use serde_json::Value;
 
-use crate::EventType;
+use crate::{
+    Event, EventType, InvalidEvent, InvalidInput, RoomEvent, StateEvent,
+};
 
-state_event! {
-    /// Defines the power levels (privileges) of users in the room.
-    pub struct PowerLevelsEvent(PowerLevelsEventContent) {}
+
+/// Defines the power levels (privileges) of users in the room.
+#[derive(Clone, Debug, PartialEq)]
+pub struct PowerLevelsEvent {
+    /// The event's content.
+    pub content: PowerLevelsEventContent,
+
+    /// The unique identifier for the event.
+    pub event_id: EventId,
+
+    /// Timestamp (milliseconds since the UNIX epoch) on originating homeserver when this
+    /// event was sent.
+    pub origin_server_ts: UInt,
+
+    /// The previous content for this state key, if any.
+    pub prev_content: Option<NameEventContent>,
+
+    /// The unique identifier for the room associated with this event.
+    pub room_id: Option<RoomId>,
+
+    /// Additional key-value pairs not signed by the homeserver.
+    pub unsigned: Option<Value>,
+
+    /// The unique identifier for the user who sent this event.
+    pub sender: UserId,
+
+    /// A key that determines which piece of room state the event represents.
+    pub state_key: String,
 }
 
-/// The payload of a `PowerLevelsEvent`.
-#[derive(Clone, Debug, Deserialize, PartialEq, Serialize)]
+/// The payload for `PowerLevelsEvent`.
+#[derive(Clone, Debug, PartialEq, Serialize)]
 pub struct PowerLevelsEventContent {
     /// The level required to ban a user.
     #[serde(default = "default_power_level")]
@@ -60,6 +88,186 @@ pub struct PowerLevelsEventContent {
     pub notifications: NotificationPowerLevels,
 }
 
+impl FromStr for PowerLevelsEvent {
+    type Err = crate::InvalidEvent;
+
+    /// Attempt to create `Self` from parsing a string of JSON data.
+    fn from_str(json: &str) -> Result<Self, Self::Err> {
+        let raw = serde_json::from_str::<raw::PowerLevelsEvent>(json)?;
+
+        Ok(Self {
+            content: PowerLevelsEventContent {
+                ban: raw.content.ban,
+                events: raw.content.events,
+                events_default: raw.content.events_default,
+                invite: raw.content.invite,
+                kick: raw.content.kick,
+                redact: raw.content.redact,
+                state_default: raw.content.state_default,
+                users: raw.content.users,
+                users_default: raw.content.users_default,
+                notifications: raw.content.notifications,
+            },
+            event_id: raw.event_id,
+            origin_server_ts: raw.origin_server_ts,
+            prev_content: raw
+                .prev_content
+                .map(|prev| PowerLevelsEventContent {
+                    ban: prev.ban,
+                    events: prev.events,
+                    events_default: prev.events_default,
+                    invite: prev.invite,
+                    kick: prev.kick,
+                    redact: prev.redact,
+                    state_default: prev.state_default,
+                    users: prev.users,
+                    users_default: prev.users_default,
+                    notifications: prev.notifications,
+                }),
+            room_id: raw.room_id,
+            unsigned: raw.unsigned,
+            sender: raw.sender,
+            state_key: raw.state_key,
+        })
+    }
+}
+
+impl<'a> TryFrom<&'a str> for PowerLevelsEvent {
+    type Error = InvalidEvent;
+
+    /// Attempt to create `Self` from parsing a string of JSON data.
+    fn try_from(json: &'a str) -> Result<Self, Self::Error> {
+        FromStr::from_str(json)
+    }
+}
+
+impl Serialize for NameEvent {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        let mut len = 6;
+
+        if self.prev_content.is_some() {
+            len += 1;
+        }
+
+        if self.room_id.is_some() {
+            len += 1;
+        }
+
+        if self.unsigned.is_some() {
+            len += 1;
+        }
+
+        let mut state = serializer.serialize_struct("PowerLevelsEvent", len)?;
+
+        state.serialize_field("content", &self.content)?;
+        state.serialize_field("event_id", &self.event_id)?;
+        state.serialize_field("origin_server_ts", &self.origin_server_ts)?;
+
+        if self.prev_content.is_some() {
+            state.serialize_field("prev_content", &self.prev_content)?;
+        }
+
+        if self.room_id.is_some() {
+            state.serialize_field("room_id", &self.room_id)?;
+        }
+
+        if self.unsigned.is_some() {
+            state.serialize_field("unsigned", &self.unsigned)?;
+        }
+
+        state.serialize_field("sender", &self.sender)?;
+        state.serialize_field("state_key", &self.state_key)?;
+        state.serialize_field("type", &self.event_type())?;
+
+        state.end()
+    }
+}
+
+impl_state_event!(PowerLevelsEvent, PowerLevelsEventContent, EventType::RoomPowerLevels);
+
+mod raw {
+    use super::*;
+
+    /// Defines the power levels (privileges) of users in the room.
+    #[derive(Clone, Debug, Deserialize, PartialEq)]
+    pub struct PowerLevelsEvent {
+        /// The event's content.
+        pub content: PowerLevelsEventContent,
+
+        /// The unique identifier for the event.
+        pub event_id: EventId,
+
+        /// Timestamp (milliseconds since the UNIX epoch) on originating homeserver when this
+        /// event was sent.
+        pub origin_server_ts: UInt,
+
+        /// The previous content for this state key, if any.
+        pub prev_content: Option<NameEventContent>,
+
+        /// The unique identifier for the room associated with this event.
+        pub room_id: Option<RoomId>,
+
+        /// Additional key-value pairs not signed by the homeserver.
+        pub unsigned: Option<Value>,
+
+        /// The unique identifier for the user who sent this event.
+        pub sender: UserId,
+
+        /// A key that determines which piece of room state the event represents.
+        pub state_key: String,
+    }
+
+    /// The payload for `PowerLevelsEvent`.
+    #[derive(Clone, Debug, Deserialize, PartialEq)]
+    pub struct PowerLevelsEventContent {
+        /// The level required to ban a user.
+        #[serde(default = "default_power_level")]
+        pub ban: Int,
+
+        /// The level required to send specific event types.
+        ///
+        /// This is a mapping from event type to power level required.
+        pub events: HashMap<EventType, Int>,
+
+        /// The default level required to send message events.
+        #[serde(default)]
+        pub events_default: Int,
+
+        /// The level required to invite a user.
+        #[serde(default = "default_power_level")]
+        pub invite: Int,
+
+        /// The level required to kick a user.
+        #[serde(default = "default_power_level")]
+        pub kick: Int,
+
+        /// The level required to redact an event.
+        #[serde(default = "default_power_level")]
+        pub redact: Int,
+
+        /// The default level required to send state events.
+        #[serde(default = "default_power_level")]
+        pub state_default: Int,
+
+        /// The power levels for specific users.
+        ///
+        /// This is a mapping from `user_id` to power level for that user.
+        pub users: HashMap<UserId, Int>,
+
+        /// The default power level for every user in the room.
+        #[serde(default)]
+        pub users_default: Int,
+
+        /// The power level requirements for specific notification types.
+        ///
+        /// This is a mapping from `key` to power level for that notifications key.
+        pub notifications: NotificationPowerLevels,
+    }
+}
+
 /// The power level requirements for specific notification types.
 #[derive(Clone, Copy, Debug, Deserialize, PartialEq, Serialize)]
 pub struct NotificationPowerLevels {