{
  "manageEntity": {
    "action": "Save",
    "entityId": "1464710382",
    "entityType": "Track",
    "nonce": "0xfa2e88d0579476d1859e008c2121408465cfb91bea728c893a14e458be4631db",
    "signature": "0x8e22dbf59ae6d3282d512dec51185107fb3481da35f18dda129dfaaa1a2a13f64c6d077b17cd466f815fed62880f1de053a73708618ae50733ab16ce8e1dca811b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}