OTAC Delivery Generated

{
  "data": {
    "ancillary": {
      "participant_unique_id2": 123456789876543220,
      "session_id": "00000000-0000-0000-0000-000000000001",
      "party_id": "",
      "participant_unique_id1": "1111111-222222222-33333333-444555",
      "notification_id": "1000001"
    },
    "event": {
      "client_message": "OTAC send (EMAIL)",
      "status": "1154"
    }
  },
  "metadata": {
    "version": "1",
    "topic_description": "OTAC Generate",
    "timestamp": 1751558052,
    "topic": "transaction.party.authentication.otac.delivery.generate",
    "id": "1a123abc-fa82-4b62-9094-a8363f6be90f"
  }
}