{
  "manageEntity": {
    "action": "Save",
    "entityId": "1063815714",
    "entityType": "Track",
    "nonce": "0x8d05566adc03b74ed0d2f8665085b75833c4bb014be45903197c9b8b669f1979",
    "signature": "0x3bfe0bae74ebfc737ebb7fc0ce3aa5323410269f65f340a9f1d3835fb7796228437f2dffc11981eddcc87eb4128be86da89931de1f2ea4537b134693fe9758381b",
    "signer": "0x2B28feb1CA15953a5a910C4E741698a24e8b3FE9",
    "userId": "887020893"
  }
}