curl --request GET \
  --url https://apix.us.amity.co/realtime/marker.marked-message

{
  "contentMarkers": [
    {
      "contentId": "<string>",
      "feedId": "<string>",
      "segment": 123,
      "creatorId": "<string>",
      "readCount": 123,
      "deliveredCount": 123,
      "createdAt": "2023-11-07T05:31:56Z",
      "updatedAt": "2023-11-07T05:31:56Z"
    }
  ],
  "feedMarkers": [
    {
      "entityId": "<string>",
      "feedId": "<string>",
      "lastSegment": 123,
      "isDeleted": true,
      "createdAt": "2023-11-07T05:31:56Z",
      "updatedAt": "2023-11-07T05:31:56Z"
    }
  ]
}