{
  "manageEntity": {
    "action": "Save",
    "entityId": "1542065552",
    "entityType": "Track",
    "nonce": "0xf3b5b4fc788ff68d791481f949718aeebfdacd21bd27fbfd369f7dcabb664e60",
    "signature": "0x51e22189ceb0c232d7ebf0950389fdb9a9d89736c50afe7dd7b46589e61bae0c1d8d09df879651161c8347d8707b17e3adc272db24f600786ab26ba06e9f51091c",
    "signer": "0x6802Fe39C5FA9f99ac1Aa32F164982185A3E70ea",
    "userId": "152482938"
  }
}