curl --request GET \
  --url https://api-next.ofauth.com/v2/access/mass-messages \
  --header 'apiKey: <api-key>' \
  --header 'x-connection-id: <api-key>'

{
  "list": [
    {
      "id": 123,
      "text": "<string>",
      "fromUser": {
        "id": 123,
        "name": "<string>"
      },
      "media": [
        {
          "id": 123,
          "type": "photo",
          "convertedToVideo": true,
          "canView": true,
          "hasError": true,
          "createdAt": "<string>",
          "isReady": true,
          "releaseForms": [
            {
              "id": 123,
              "name": "<string>",
              "partnerSource": "<string>",
              "type": "<string>",
              "user": {
                "view": "<string>",
                "id": 123,
                "name": "<string>",
                "username": "<string>",
                "isVerified": true,
                "avatar": "<string>",
                "avatarThumbs": {
                  "c50": "<string>",
                  "c144": "<string>"
                },
                "ivStatus": "<string>",
                "isFromGuest": true
              }
            }
          ],
          "duration": 123,
          "hasCustomPreview": true,
          "videoSources": {
            "240": "<string>",
            "720": "<string>"
          },
          "files": {
            "full": {
              "url": "<string>",
              "sources": [
                {
                  "url": "<string>",
                  "width": 123,
                  "height": 123,
                  "type": "<string>"
                }
              ],
              "width": 123,
              "height": 123,
              "size": 123
            },
            "thumb": {
              "url": "<string>",
              "width": 123,
              "height": 123,
              "size": 123
            },
            "preview": {
              "url": "<string>",
              "options": [
                {
                  "url": "<string>",
                  "width": 123,
                  "height": 123,
                  "type": "<string>"
                }
              ],
              "width": 123,
              "height": 123,
              "size": 123
            },
            "squarePreview": {
              "url": "<string>",
              "width": 123,
              "height": 123,
              "size": 123
            }
          }
        }
      ],
      "previews": [
        123
      ],
      "isMediaReady": true,
      "mediaCount": 123,
      "lockedText": true,
      "responseType": "<string>",
      "giphyId": "<string>",
      "isFree": true,
      "isTip": true,
      "isReportedByMe": true,
      "isCouplePeopleMedia": true,
      "queueId": 123,
      "isMarkdownDisabled": true,
      "releaseForms": "<unknown>",
      "isFromQueue": true,
      "canUnsendQueue": true,
      "unsendSecondsQueue": 123,
      "isOpened": true,
      "isNew": true,
      "createdAt": "<string>",
      "changedAt": "<string>",
      "cancelSeconds": 123,
      "isLiked": true,
      "canPurchase": true,
      "canPurchaseReason": "<string>",
      "canReport": true,
      "canBePinned": true,
      "isPinned": true,
      "date": "<string>",
      "textCropped": "<string>",
      "sentCount": 123,
      "viewedCount": 123,
      "canUnsend": true,
      "unsendSeconds": 123,
      "isCanceled": true,
      "mediaTypes": {
        "video": 123,
        "photo": 123,
        "gif": 123,
        "audio": 123
      },
      "hasError": true,
      "price": "<string>",
      "purchasedCount": 123,
      "canSendMessageToBuyers": true
    }
  ],
  "hasMore": true
}