{
  "manageEntity": {
    "action": "Download",
    "entityId": "1450008658",
    "entityType": "Track",
    "nonce": "0xb6c569832498d8cb3fbd0a8c4511e45859e63a3be3a3c6c1173c347e5f8c2b4f",
    "signature": "0x9b67d04d4d27dd2035292a00b86871e6a6de424d53e76bf39d9d623a9c6b28664ac726055fb594a09d658222242c8d71b2bdcbafc742879a59c2fc0973b15cc41b",
    "signer": "0xB8eB041c99d83265B611e0d5172A226432Aa8e74",
    "userId": "763164503"
  }
}