{
  "manageEntity": {
    "action": "Save",
    "entityId": "1782219674",
    "entityType": "Track",
    "nonce": "0x2e426fa2c34cc4478083d32b7d111836ab19a1bcb2051a5756d235fc0b6ffb39",
    "signature": "0x8cfc173bf22e358e1fcce0fe41a86ffc42df2ad08adfb94f4fe1842c149bf75a15fad3ec21e95b3d4d10e4916d490e359ac592b93052bc66acade20bec6e3f5d1b",
    "signer": "0xE90A32F538E46928dB1ee6DC7D37cBcF7dAb248B",
    "userId": "844749397"
  }
}