{
  "manageEntity": {
    "action": "Save",
    "entityId": "1692151497",
    "entityType": "Track",
    "nonce": "0x272947dc7160c41f3fead00d010f9a88c13a7fb93857555c1347dbf1bcacd499",
    "signature": "0x95c0f322fc5b8223cb06008d9eb91fed8429291a316d077a101d26bf399e1c6e6c3128a3b076982680b7a7d7aecd405977fa8ad9daf1e85ba86493529ab533e41b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}