{
  "manageEntity": {
    "action": "Save",
    "entityId": "835391618",
    "entityType": "Track",
    "nonce": "0x06e7d1e2c4eb8d41a47b9b1fc7a43f918d86231b524061af3afa62423dd6d3e7",
    "signature": "0xfc689b877b8fe20cc12efdffed1b00c604025da56e1a28ecef5349a62a3a4737258135560306f422dbc588091829a2bbb0d408fe6719387430e3f89cd07174b21b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}