diff --git a/ws/structs.go b/ws/structs.go
index 0669da2..2bf768c 100644
--- a/ws/structs.go
+++ b/ws/structs.go
@@ -30,6 +30,10 @@ type User struct {
 	Name string `json:"name"`
 }
 
+type Destination struct {
+	Channel string `json:"channel"`
+}
+
 type GatewayMessageIn struct {
 	MsgID      string                 `json:"msg_id"`
 	Server     string                 `json:"server"`
@@ -43,6 +47,7 @@ type GatewayMessageIn struct {
 type GatewayMessageOut struct {
 	Type        string           `json:"type"` // "message"
 	Payload     GatewayMessageIn `json:"payload"`
+	Destination Destination      `json:"destination"`
 	ForwardedBy string           `json:"forwarded_by"` // "ws"/"http"
 	ForwardedAt time.Time        `json:"forwarded_at"`
 }