diff --git a/lavalink/player_update.go b/lavalink/player_update.go
index b6c87c7..619a213 100644
--- a/lavalink/player_update.go
+++ b/lavalink/player_update.go
@@ -6,16 +6,21 @@ func DefaultPlayerUpdate() *PlayerUpdate {
 	return &PlayerUpdate{}
 }
 
+type PlayerUpdateTrack struct {
+	Encoded    *json.Nullable[string] `json:"encoded,omitempty"`
+	Identifier *string                `json:"identifier,omitempty"`
+	UserData   any                    `json:"userData,omitempty"`
+}
+
 type PlayerUpdate struct {
-	EncodedTrack *json.Nullable[string] `json:"encodedTrack,omitempty"`
-	Identifier   *string                `json:"identifier,omitempty"`
-	Position     *Duration              `json:"position,omitempty"`
-	EndTime      *Duration              `json:"endTime,omitempty"`
-	Volume       *int                   `json:"volume,omitempty"`
-	Paused       *bool                  `json:"paused,omitempty"`
-	Voice        *VoiceState            `json:"voice,omitempty"`
-	Filters      *Filters               `json:"filters,omitempty"`
-	NoReplace    bool                   `json:"-"`
+	Track     *PlayerUpdateTrack `json:"track,omitempty"`
+	Position  *Duration          `json:"position,omitempty"`
+	EndTime   *Duration          `json:"endTime,omitempty"`
+	Volume    *int               `json:"volume,omitempty"`
+	Paused    *bool              `json:"paused,omitempty"`
+	Voice     *VoiceState        `json:"voice,omitempty"`
+	Filters   *Filters           `json:"filters,omitempty"`
+	NoReplace bool               `json:"-"`
 }
 
 type PlayerUpdateOpt func(update *PlayerUpdate)
@@ -26,31 +31,52 @@ func (u *PlayerUpdate) Apply(opts []PlayerUpdateOpt) {
 	}
 }
 
+func WithNoReplace(noReplace bool) PlayerUpdateOpt {
+	return func(update *PlayerUpdate) {
+		update.NoReplace = noReplace
+	}
+}
+
 func WithTrack(track Track) PlayerUpdateOpt {
-	return WithEncodedTrack(track.Encoded)
+	return func(update *PlayerUpdate) {
+		WithEncodedTrack(track.Encoded)(update)
+		WithTrackUserData(track.UserData)(update)
+	}
 }
 
 func WithEncodedTrack(encodedTrack string) PlayerUpdateOpt {
 	return func(update *PlayerUpdate) {
-		update.EncodedTrack = json.NewNullablePtr(encodedTrack)
+		if update.Track == nil {
+			update.Track = &PlayerUpdateTrack{}
+		}
+		update.Track.Encoded = json.NewNullablePtr(encodedTrack)
 	}
 }
 
 func WithNullTrack() PlayerUpdateOpt {
 	return func(update *PlayerUpdate) {
-		update.EncodedTrack = json.NullPtr[string]()
+		if update.Track == nil {
+			update.Track = &PlayerUpdateTrack{}
+		}
+		update.Track.Encoded = json.NullPtr[string]()
 	}
 }
 
-func WithNoReplace(noReplace bool) PlayerUpdateOpt {
+func WithTrackIdentifier(identifier string) PlayerUpdateOpt {
 	return func(update *PlayerUpdate) {
-		update.NoReplace = noReplace
+		if update.Track == nil {
+			update.Track = &PlayerUpdateTrack{}
+		}
+		update.Track.Identifier = &identifier
 	}
 }
 
-func WithIdentifier(identifier string) PlayerUpdateOpt {
+func WithTrackUserData(userData any) PlayerUpdateOpt {
 	return func(update *PlayerUpdate) {
-		update.Identifier = &identifier
+		if update.Track == nil {
+			update.Track = &PlayerUpdateTrack{}
+		}
+		update.Track.UserData = userData
 	}
 }
 
diff --git a/lavalink/playlist.go b/lavalink/playlist.go
index fb8f1bc..020c004 100644
--- a/lavalink/playlist.go
+++ b/lavalink/playlist.go
@@ -2,7 +2,7 @@ package lavalink
 
 type Playlist struct {
 	Info       PlaylistInfo `json:"info"`
-	PluginInfo PluginInfo   `json:"pluginInfo"`
+	PluginInfo RawData      `json:"pluginInfo"`
 	Tracks     []Track      `json:"tracks"`
 }
 
diff --git a/lavalink/plugin.go b/lavalink/plugin.go
index d5d1584..088031d 100644
--- a/lavalink/plugin.go
+++ b/lavalink/plugin.go
@@ -11,20 +11,20 @@ type Plugin struct {
 	Version string `json:"version"`
 }
 
-type PluginInfo json.RawMessage
+type RawData json.RawMessage
 
-func (p PluginInfo) String() string {
+func (p RawData) String() string {
 	return string(p)
 }
 
-func (p PluginInfo) Unmarshal(v any) error {
+func (p RawData) Unmarshal(v any) error {
 	return json.Unmarshal(p, v)
 }
 
-func (p *PluginInfo) UnmarshalJSON(data []byte) error {
+func (p *RawData) UnmarshalJSON(data []byte) error {
 	return json.Unmarshal(data, (*json.RawMessage)(p))
 }
 
-func (p PluginInfo) MarshalJSON() ([]byte, error) {
+func (p RawData) MarshalJSON() ([]byte, error) {
 	return json.Marshal(json.RawMessage(p))
 }
diff --git a/lavalink/track.go b/lavalink/track.go
index 139e279..e8d33ea 100644
--- a/lavalink/track.go
+++ b/lavalink/track.go
@@ -4,6 +4,7 @@ import (
 	"database/sql"
 	"database/sql/driver"
 	"errors"
+	"fmt"
 
 	"github.com/disgoorg/json"
 )
@@ -14,9 +15,20 @@ var (
 )
 
 type Track struct {
-	Encoded    string     `json:"encoded"`
-	Info       TrackInfo  `json:"info"`
-	PluginInfo PluginInfo `json:"pluginInfo"`
+	Encoded    string    `json:"encoded"`
+	Info       TrackInfo `json:"info"`
+	PluginInfo RawData   `json:"pluginInfo"`
+	UserData   RawData   `json:"userData"`
+}
+
+// WithUserData returns a copy of the Track with the given userData.
+func (t Track) WithUserData(userData any) (Track, error) {
+	userDataRaw, err := json.Marshal(userData)
+	if err != nil {
+		return t, fmt.Errorf("failed to marshal userData: %w", err)
+	}
+	t.UserData = userDataRaw
+	return t, nil
 }
 
 func (Track) loadResultData() {}