{
  "manageEntity": {
    "action": "Save",
    "entityId": "1111482",
    "entityType": "Track",
    "nonce": "0x2862d1eae8d55da1fafd2ae9864e1df96ef1d8d0db4e6091dc7ea72cabfcd24a",
    "signature": "0x5bac9b3e2e40d270cd991e043b6b083eb577811727a6b2398b72f0159ccbdb1d05f4082c5af2bd197b84ea596288da53ed8f332f8c39ea7d1439462fbf1913431b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}