{
  "manageEntity": {
    "action": "Save",
    "entityId": "1882337426",
    "entityType": "Track",
    "nonce": "0x381910e0cadfee18cdd3aed966c1058a63ee41270d1d6ac290edc3127289ad64",
    "signature": "0x73e4767fba421d31bddfd2b41fee286169ddca34ce8f70b51f64e3edc76ccbc460d7c58bdf02dcfaafc6d482f3ac703e37e698125355eb833772ceb04bbeac471c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}