{
  "manageEntity": {
    "action": "Download",
    "entityId": "1870610678",
    "entityType": "Track",
    "nonce": "0xd6d88aefc98a1d19e0789fc3a030d887857fcef34d3817bc9c74be97cf03cf57",
    "signature": "0xac840473513bfeef79e7bb5cf10a5134c98bac1ade4e170421db436f36acb7f409663710fd8e56370bdf48d88488ef554da9e09b717d8d32389df1a70bface671b",
    "signer": "0x66D5a47093CA456Fb917370fC8f2108aC7EE69b8",
    "userId": "290537579"
  }
}