The REST and SignalR APIs documented here are more complex than the client SDKs. Consider using the Lobby C++ SDK or Matchmaking C++ SDK instead, unless those SDKs don’t meet your needs.
Parameters
SubscriptionChangeMessage
ReceiveSubscriptionChangeMessage SignalR client method
ReceiveSubscriptionChangeMessage SignalR client method notifying PlayFab Lobby and Matchmaking clients when a subscribe or unsubscribe request completes.
Receives SubscriptionChangeMessages,
so the client knows when its subscription
status changes. This message indicates that a request to subscribe or
unsubscribe finished processing. It’s possible that the service fails
to perform a subscription update in a way where the client never receives
this message. For this reason, clients should implement a timer so they can
retry the subscription call if this method doesn’t receive a
SubscriptionChangeMessage
after 5 seconds. This timer-based retry can be performed a few
times with exponential backoff for subsequent attempts.
Last modified on August 4, 2026
Related topics
ReceiveMessage SignalR client methodReal-time messages SignalR HubSubscriptionChangeMessage real-time messages typeSubscribing to resources for real-time messagesAddEntityToSession SignalR server method