{
  "manageEntity": {
    "action": "Save",
    "entityId": "1088858022",
    "entityType": "Track",
    "nonce": "0x5339e41ffa46477dbfbb2ab2fd557420cbfb719f90769b6a25b8e46c70acbb9c",
    "signature": "0x7df48d79dd3f807da2c3d839e2b8b7ecb9bb95a30ed6ab3edf41761db2d9520511a7319cdcadbfb8b681340b4a040b8b45f8c0fec36a6a21a7551fe8e100e2bb1b",
    "signer": "0x5A4a438EB48E0567283E8B2Fcb511DE3cD0Da231",
    "userId": "102202598"
  }
}