{
  "manageEntity": {
    "action": "Download",
    "entityId": "1487193550",
    "entityType": "Track",
    "nonce": "0x3a4a04edacf88fd60e24eb6d10218e14e7388bcb6ecf7ce4d0be33a3d5d38bf2",
    "signature": "0xdbcd03372d7b83c16a20326cf3de250e115f67d6edea99f62881e15bf2319911340009f187eca725ba00e82c2291adb52fc918a0ce95f38be19f31ff3c181fe61b",
    "signer": "0xd1c9079e1A90803D5dda707982af8EFE69ba4aec",
    "userId": "109883317"
  }
}