{
  "schemaVersion": "v1",
  "messageType": "SubmitResult",
  "traceId": "trace-20260701-000001",
  "messageId": "msg-20260701-000001",
  "channelId": "sms-channel-cmpp-001",
  "createdAt": "2026-07-01T09:00:00.120Z",
  "sequenceId": 1024,
  "gatewayMessageId": "gw-msg-20260701-000001",
  "submitStatus": "accepted",
  "submittedAt": "2026-07-01T09:00:00.118Z",
  "segments": [
    {
      "segmentTotal": 1,
      "segmentIndex": 1,
      "sequenceId": 1024,
      "gatewayMessageId": "gw-msg-20260701-000001",
      "submitStatus": "accepted",
      "submittedAt": "2026-07-01T09:00:00.118Z"
    }
  ]
}