{
  "manageEntity": {
    "action": "Save",
    "entityId": "829969404",
    "entityType": "Track",
    "nonce": "0x82e8d127de5fc17aecab8269728bbd29a112d56a5a75f16cbb54c6afe948d104",
    "signature": "0x14b4d059f1d2c1371035ed0a9312d87041417113fcfc781ba0caf4becae19fb06a30a1babef5c793d1440144554ad3953a5eb3174af98ce9ec63e33388b6c6c71c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}