{
  "manageEntity": {
    "action": "Download",
    "entityId": "444780",
    "entityType": "Track",
    "nonce": "0xd39460989c3e3f7a87c335891d8cbcd240d0df23e03d80ab288cb51c9f7cb48a",
    "signature": "0xa460758a29dd9fe9e77d13e64553b75f03901b95b29186f63da88b9ffbabaec077e7c1f860dec86cd2c10bb1a34a4c01afd1c7eb3576a97801a6dd1f3b95f4711c",
    "signer": "0x4D685A9F6DFad053F401a412F6A03094EB9c745f",
    "userId": "6256"
  }
}