{
  "manageEntity": {
    "action": "Download",
    "entityId": "1217971634",
    "entityType": "Track",
    "nonce": "0xe99a8438fba3f4c982023929f827b559f2bffc3bb543d36ef92a85317c93de40",
    "signature": "0xe38702cc9f58813efa24b44b350f6ef7072bc8918fd981c30aefee36e1952be04026aede3649a6f2e5e6457542ebe7032a1b69fd149bca968d4d4a35bd2fda0f1c",
    "signer": "0x26533aa9EdEf3647F06cd135f341B7a70A3B7d59",
    "userId": "355733"
  }
}