{
  "manageEntity": {
    "action": "Download",
    "entityId": "551507307",
    "entityType": "Track",
    "nonce": "0x8dc91b2dfb6fdc9a4d78df41776721744fd1d6406d429d851827cde85758918e",
    "signature": "0xf75ebefd242d7e6d8a8e57c1b856d53b88f37d63439a1699a241d63c8be6e02127be111e1ba7fa8790536e47bc95e919bc095673197f2d4568232c6ef6728a3d1c",
    "signer": "0x72119e5C4B7Ce3C0c856D159A264C02FA71570DF",
    "userId": "80047"
  }
}