Optional ReadonlychangesChanges to be subscribed to.
ReadonlydestinationMessaging service to which the notifications are sent.
Optional ReadonlyeventsEvents to be subscribed to.
Optional ReadonlyformatFormat in which the payload is delivered. When not provided, the PlatformFormat is selected by default.
Optional ReadonlykeyUser-defined unique identifier for the Subscription.
Optional ReadonlymessagesMessages to be subscribed to.
Either
messages,changes, oreventsmust be set.