Room Event - OnMemberBroadcast
The event is raised when a member of the room sends a message using BroadcastTo.
NOTE: The event is raised when you send a message using BroadcastTo as well. This means that you receive your own message as well.
room.OnMemberBroadcast += OnRoomMemberBroadcast;
private void OnRoomMemberBroadcast(byte[] message)
{
}