{
  "manageEntity": {
    "action": "Save",
    "entityId": "1624354034",
    "entityType": "Track",
    "nonce": "0xaab62bb8b4fc19b6a32c3d981b6acc9cdc2bf0e0aa6cdca458b957181669d610",
    "signature": "0x2069f88f51e6a720b91c2baf0fe023ba4c61d29e5f09ab18ceddf12f52848bb952ba9cb1c5bccb32408f2efd7a79cc874531f599576dc902147becdd7f3bfd3d1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}