{
  "manageEntity": {
    "action": "Download",
    "entityId": "1912993532",
    "entityType": "Track",
    "nonce": "0xe9b463e5c7f97620aa51214f7cad78df60a5e1a99a37c2aa05a4c7012670f966",
    "signature": "0x323046fc3bca2a05d88085435a733f2c94ab8b0351659e2fd26b69582270f9475542bc1b5faad011d31479ad5c180ccd8dc345a3c6680052c691c5eb1aa7eb5c1b",
    "signer": "0x4affB179527ee604CBCCb000A6fB3E5563330F2e",
    "userId": "265097712"
  }
}