{
  "manageEntity": {
    "action": "Download",
    "entityId": "850383468",
    "entityType": "Track",
    "nonce": "0x528dc9fc73c5eb3a97f7ad9802e7a7792f0aefc4cd6213d249b4f19990310ddf",
    "signature": "0xb2d377d08c8a5558e02ab97d7aba56e6d2b4d72d88d09cd5cef33975efeb2478739b88704f1b6854d9cb51778934860fbbc03dad31994c40dc1e0a47e4af45b21c",
    "signer": "0x26533aa9EdEf3647F06cd135f341B7a70A3B7d59",
    "userId": "355733"
  }
}