OptionalapplicationOptionalcallDetermines the kind of call this will be.
OptionalnotificationHow long (in milliseconds) the callee's client should keep ringing/waiting for an answer before the sender gives up and the call notification is considered timed out.
OptionalnotificationWhat kind of notification to send when starting the session.
Application-specific data to publish in our membership alongside the application
typeandm.call.intent: in theapplicationobject of anm.rtc.memberevent, or at the top level of a legacym.call.memberone. Keys should be namespaced. Read back through CallMembership.applicationData.