{
  "event": "CANCELLATION_FAILED",
  "external_user_id": "3dcbb19a-b2f1-4a7b-8792-d76027b627b3",
  "merchant": {
    "id": 11,
    "name": "Uber"
  },
  "data": {
    "subscription_id": "ka8sdf0asdfm10as0a0sdfja7ssa8",
    "reason": "subscription already cancelled",
    "metadata": {
      "reference_token": "abc123",
      "trace_id": "def456"
    }
  },
  "timestamp": 1710864923198
}