{
  "manageEntity": {
    "action": "Save",
    "entityId": "1289955125",
    "entityType": "Track",
    "nonce": "0xbaacff186bdfd2db0ce299f13c3831a99a42c80e3c47c08d3f420e7fbd8fa167",
    "signature": "0x2442e8855d8e32fdbf6486da209d26c973345f2fa80ed78edf4628db23cb27287500dd5ee7356a583ea0666319adca92ddad723a69b87dafe4388d75890b6c941c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}