curl --request GET \
  --url https://idaas.yourflexpay.com/api/v1/webhooks/failed \
  --header 'Authorization: Bearer <token>'

{
  "success": true,
  "message": "<string>",
  "errorCode": "<string>",
  "data": {
    "totalElements": 123,
    "totalPages": 123,
    "first": true,
    "last": true,
    "size": 123,
    "content": [
      {
        "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
        "transactionId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
        "transactionReference": "TXN-16820000-AB1C2D3E",
        "applicationId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
        "applicationName": "<string>",
        "targetUrl": "https://app-b.example.com/webhooks/transactions",
        "eventType": "TRANSACTION_INITIATED",
        "attempts": 123,
        "lastError": "<string>",
        "lastAttemptAt": "2023-11-07T05:31:56Z",
        "deliveredAt": "2023-11-07T05:31:56Z",
        "createdAt": "2023-11-07T05:31:56Z",
        "updatedAt": "2023-11-07T05:31:56Z"
      }
    ],
    "number": 123,
    "sort": [
      {
        "direction": "<string>",
        "nullHandling": "<string>",
        "ascending": true,
        "property": "<string>",
        "ignoreCase": true
      }
    ],
    "numberOfElements": 123,
    "pageable": {
      "offset": 123,
      "sort": [
        {
          "direction": "<string>",
          "nullHandling": "<string>",
          "ascending": true,
          "property": "<string>",
          "ignoreCase": true
        }
      ],
      "paged": true,
      "unpaged": true,
      "pageNumber": 123,
      "pageSize": 123
    },
    "empty": true
  },
  "errors": [
    "<string>"
  ],
  "timestamp": "2023-11-07T05:31:56Z"
}