{
  "manageEntity": {
    "action": "Save",
    "entityId": "427509645",
    "entityType": "Track",
    "nonce": "0xd17331cf321032fbabf505fb18f70d0899991c8711902779460c18022df66319",
    "signature": "0x5933e98f162a6b88ae9042b6f654a0dbce194ac94c266cb6022115c7b07e9667036e510c63d3e32790ebe48dfc487243fd060149f3b0033758412883e63410191c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}