{
  "manageEntity": {
    "action": "Save",
    "entityId": "3827",
    "entityType": "Track",
    "nonce": "0x0fae5b8281848cf5c66984e88a10f4b26f6755b45c9cdc9a364c61cc93cd49c3",
    "signature": "0x647e82ed256769c946989e6c9877cbd344ac84d68f1f33be36ffaba1cd3093dc356f819fe9cb2a3b4c638f101815c8fd03273e281e80ad08f55d8b78752000b21b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}