{
  "manageEntity": {
    "action": "Save",
    "entityId": "1601797093",
    "entityType": "Track",
    "nonce": "0x93c3296a207fdafbc918e7cd989edd6dca46ebbb080e87388055042682ed6bdb",
    "signature": "0xd697d5db3683d8ae12e0c3ee374935adfb148ac99a2b6587938dbc248a4899ff35cd83117b5d9b180501f063bdf0ce217b7c0651210c3b7d97953bf21fea6ec21c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}