{
  "manageEntity": {
    "action": "Save",
    "entityId": "996794741",
    "entityType": "Track",
    "nonce": "0x7b9ebe4062d6ffac16fc98f22889cfacaa87b176110a76a6384c51c93692f4a7",
    "signature": "0x95ebf8006e0913bf833bef7b18d7f11f017e31f83724ae2bd46b90abb04c35b1730783fa37f0b12dce8bbfd987111525188ae9bdbad1dcd83727dd0199da331e1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}