{
  "manageEntity": {
    "action": "Save",
    "entityId": "1228474161",
    "entityType": "Track",
    "nonce": "0x40f88d264e825738c19b4335b839667527faaea337f2f93cc71537914f322569",
    "signature": "0x5d15122b9b4f5fb72bc1b524036ccda302f5209c116d07ea73ad859d6d8f5e36314e58b459a78bba4d83358147429614f1d3309b5ef533c29038deee986f54cc1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}