{
  "manageEntity": {
    "action": "Save",
    "entityId": "174323347",
    "entityType": "Track",
    "nonce": "0x88f10ba9359f80e267e2fceb7dd08fb7202ba3bb17ab4f9bcf0e90cb06839808",
    "signature": "0x7b08ef2b5ea535f65498c51f1c19c687d2738c595d5bdd1855199a78fdcb98563519682cbd3c78e50078f49c398f9f7505ceaefe185b386335caf6210c522da81c",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}