{
  "manageEntity": {
    "action": "Download",
    "entityId": "1480231477",
    "entityType": "Track",
    "nonce": "0x2038eb7e8700ab935717e4dbc9d421ec6a77949d6939f3900115156630939b93",
    "signature": "0x9993645ee3f6ac5dd36333bdadbb18923776217a836cdbf317d0be5c60e4ab9d35a8a45c85f9a2ed9375fdd5549d486ae1f0d8058e76e464d16647c8a0b3d3b71b",
    "signer": "0xbf8f0f3294eA67e92d4B57308f7516D2F60a28D2",
    "userId": "464332"
  }
}