Type Alias SessionUserJoinedEvent
SessionUserJoinedEvent: Event<"session.user_joined"> & { event: "session.user_joined"; event_ts: number; payload: { account_id: string; object: { id: string; session_id: string; session_key?: string; session_name: string; user: { id: string; join_time: string; name: string; phone_number?: string; user_key?: string; }; }; };}