{
  "manageEntity": {
    "action": "Save",
    "entityId": "172281",
    "entityType": "Track",
    "nonce": "0x6c94e36f8c8f8d54a158518d325a0101068bba52822271e164b2e11be43afdfa",
    "signature": "0x3868059bbab10193c29690c1358404163fe0f12e55692ff64e1498bac91e47c276b166818dbc94148a4d24193c85a858e45d8bfd16a598bc1cc0d681e998e2d01b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}