{
  "call_id": "8f9b2c1e-4a5d-4f6e-8b1a-2c3d4e5f6a7d",
  "payload": {
    "type": "no_answer",
    "retry_attempt_number": 1,
    "root_call_id": null,
    "next_retry_at": "2026-04-12T12:30:00Z"
  }
}