Creates a webhook subscription.
Token-based authentication with required prefix "Token"
255LEAD_CREATED - Lead CreatedLEAD_CLOSED - Lead ClosedLEAD_CLOSED_INCOMPLETE - Lead Closed IncompleteLEAD_LOST - Lead LostLEAD_SCHEDULE_COMPLETED - Lead Schedule CompletedLEAD_LATE_CALLBACK - Lead Late CallbackLEAD_OUT_OF_TERRITORY - Lead Out of TerritoryLEAD_BAD_NUMBER - Lead Bad NumberLEAD_CANCELLED - Lead CancelledLEAD_CALLBACK_TO_TRANSFER - Lead Callback to TransferCALL_COMPLETE - Call CompleteBEFORE_CALLING - Before CallingCALL_FAILED - Call FailedCALL_ENDED - Call EndedLEAD_CREATED, LEAD_CLOSED, LEAD_CLOSED_INCOMPLETE, LEAD_LOST, LEAD_SCHEDULE_COMPLETED, LEAD_LATE_CALLBACK, LEAD_OUT_OF_TERRITORY, LEAD_BAD_NUMBER, LEAD_CANCELLED, LEAD_CALLBACK_TO_TRANSFER, CALL_COMPLETE, BEFORE_CALLING, CALL_FAILED, CALL_ENDED 255LEAD_CREATED - Lead CreatedLEAD_CLOSED - Lead ClosedLEAD_CLOSED_INCOMPLETE - Lead Closed IncompleteLEAD_LOST - Lead LostLEAD_SCHEDULE_COMPLETED - Lead Schedule CompletedLEAD_LATE_CALLBACK - Lead Late CallbackLEAD_OUT_OF_TERRITORY - Lead Out of TerritoryLEAD_BAD_NUMBER - Lead Bad NumberLEAD_CANCELLED - Lead CancelledLEAD_CALLBACK_TO_TRANSFER - Lead Callback to TransferCALL_COMPLETE - Call CompleteBEFORE_CALLING - Before CallingCALL_FAILED - Call FailedCALL_ENDED - Call EndedLEAD_CREATED, LEAD_CLOSED, LEAD_CLOSED_INCOMPLETE, LEAD_LOST, LEAD_SCHEDULE_COMPLETED, LEAD_LATE_CALLBACK, LEAD_OUT_OF_TERRITORY, LEAD_BAD_NUMBER, LEAD_CANCELLED, LEAD_CALLBACK_TO_TRANSFER, CALL_COMPLETE, BEFORE_CALLING, CALL_FAILED, CALL_ENDED