{
  "manageEntity": {
    "action": "Download",
    "entityId": "553639262",
    "entityType": "Track",
    "nonce": "0xffe252abd6688996b67c9c17ada03bb304692786c1f9ba2eda70f3ecec31827f",
    "signature": "0x6cabe0aac48d8906251cf778df755a5e07ad96a05980daced3722eceb098382f68ae604f1eaf65d72b36176221fc14329a005ef5a1ee0655964e4a350f1444521c",
    "signer": "0x86d50c36f1880e21e3d45Af3a9446e3001A18AE9",
    "userId": "454632794"
  }
}