{
  "manageEntity": {
    "action": "Save",
    "entityId": "1164239029",
    "entityType": "Track",
    "nonce": "0xadd8aa9823945b0115f54551205cca92dd811a57a1feb6bd840959be7013c2ad",
    "signature": "0x439b1802846a61b855c25ea81f30e351319e8b61dac3ce26e1c86e1b0823ab4428baa3e1c906cbc082cd8d2b65703f45d9bf5f9df90ac3628ade82eafe9764211b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}