curl --request GET \
  --url https://api.royalti.io/ddex/messages/{messageId} \
  --header 'Authorization: Bearer <token>'

{
  "status": "<string>",
  "data": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "messageId": "<string>",
    "messageType": "ERN",
    "version": "<string>",
    "providerId": "<string>",
    "productId": "<string>",
    "assetIds": [
      "<string>"
    ],
    "artistId": "<string>",
    "status": "pending",
    "fileSize": 123,
    "updatedAt": "2023-11-07T05:31:56Z",
    "messageThreadId": "thread_abc123",
    "xmlContent": "<?xml version=\"1.0\"?>...",
    "deliveryAttempts": 1,
    "lastDeliveryAttempt": "2023-11-07T05:31:56Z",
    "acknowledgementReceived": "2023-11-07T05:31:56Z",
    "errorMessage": "Connection timeout to FTP server",
    "validationResult": {
      "isValid": true,
      "errors": [
        "<string>"
      ],
      "warnings": [
        "<string>"
      ]
    },
    "deliverySettings": {
      "priority": "low",
      "retryPolicy": {
        "maxAttempts": 123,
        "backoffMultiplier": 123
      },
      "timeout": 123
    },
    "metadata": {
      "generatedBy": "<string>",
      "processingTime": 123,
      "batchId": "<string>"
    },
    "createdAt": "2023-11-07T05:31:56Z",
    "provider": {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "name": "<string>",
      "code": "<string>",
      "dpid": "<string>",
      "category": "streaming",
      "defaultDeliveryMethod": "SFTP",
      "deliveryMethods": [
        "SFTP"
      ],
      "territories": [
        "<string>"
      ],
      "supportedFormats": [
        "<string>"
      ],
      "technicalSpecs": {},
      "rateLimits": {},
      "acknowledgementSettings": {},
      "description": "<string>",
      "isActive": true,
      "website": "<string>",
      "documentation": "<string>"
    },
    "product": {
      "id": "<string>",
      "title": "<string>",
      "displayArtist": "<string>",
      "upc": "<string>"
    },
    "ernDeliveries": [
      {
        "messageId": "<string>",
        "providerId": "<string>",
        "deliveryStatus": "pending",
        "deliveryMethod": "SFTP",
        "deliveryAttempts": 123,
        "deliveredAt": "2023-11-07T05:31:56Z",
        "acknowledgedAt": "2023-11-07T05:31:56Z",
        "errorMessage": "<string>"
      }
    ],
    "statusHistory": [
      {
        "status": "draft",
        "statusDate": "2023-11-07T05:31:56Z",
        "details": {},
        "errorCode": "<string>",
        "errorMessage": "<string>"
      }
    ]
  }
}