OptionalapplicationThe unique application key. You can find it in the Sinch dashboard.
OptionalcallidThe unique ID assigned to this call.
OptionalcustomA string that can be used to pass custom information related to the call.
OptionaleventMust have the value pie.
OptionalmenuOptionaltimestampThe timestamp in UTC format.
OptionalversionThe current API version.
The request body of a Prompt Input Event.