SMS_Send_Response = [
  {
    "from": {
      "type": String,
      "address": String
    },
    "to": [
      {
        "type": String,
        "address": String,
        "fields": [ String ]
      }
    ],
    "routingGroup": String,
    "encoding": String,
    "longMessageMaxParts": Int,
    "body": String,
    "userSuppliedId": String,
    "protocolId": String,
    "messageClass": String,
    "deliveryReports": String
  }
]