{
  "manageEntity": {
    "action": "Save",
    "entityId": "1939243108",
    "entityType": "Track",
    "nonce": "0x39369ed266591ef47d799ff3efa628c23ce02add55b8863e4ff7fd0da75a0cb9",
    "signature": "0x098964041b55bf4b4ed1601a2838ed7788644d91d45975d22fda92e5e55a20827a708d75eb357fde79b6c88e355045043e1971fb6522e52580ad962c00c7f75f1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}