Stop recording acknowledge (ack)

{
  "session_id": "4a39145c-2844-4557-8f34-34883f7be7d9",
  "created_at": "2021-09-01T12:00:00.123Z",
  "acknowledged": true,
  "error": null,
  "type": "stop_recording",
  "data": {
    "recording_duration": 344.45,
    "recording_left_to_process": 11.23
  }
}