{
  "inboundSMSMessageList": {
    "inboundSMSMessage": [
      {
        "messageId": "msg-500456",
        "message": "STOP",
        "senderAddress": "tel:+12125551234",
        "destinationAddress": "12345",
        "dateTime": "2026-04-19T14:30:00Z"
      }
    ],
    "numberOfMessagesInThisBatch": 1,
    "resourceURL": "https://api.att.com/sms/v3/messaging/inbox/REG-500123",
    "totalNumberOfPendingMessages": 0
  }
}