{
  "manageEntity": {
    "action": "Save",
    "entityId": "1533024228",
    "entityType": "Track",
    "nonce": "0x3a62573e0cd2310dd042a82711728661cf842e025e9d77bbf0ca6871cd03e600",
    "signature": "0x5bf36c8ddc69d092efbc8294c65e77da13c7b91bdcb277c8fa413612422a3a31419e1d5b2fab7971b6a8a65795ae8490eee1438abd29010996e17b20024d47c81b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}