{
  "manageEntity": {
    "action": "Save",
    "entityId": "1887673967",
    "entityType": "Track",
    "nonce": "0x2411c4ed94787a2eaa5774ecab18da6ff1fe93e4804fe09c6fd10ef3810152ca",
    "signature": "0x956325d30ec5fa64affaa225e0ed9ab11259ae028494525cc6c5650bd5f7d33e2d6d8ef08342cc6c4eac05c3a24d556ac0a017dd57766f9365c4d0ac454f18ca1b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}