is there a reason to serialize and then deserialize an object? - serialization

Question

I have a SOAP web service that someone developed at my work place and i try to learn it and i came across a move in the code that i can't get my head around. can someone explain to me the logic behind it? why would someone want to serialize an object and a line after to deserialize it?
**this is the whole code: if someone has a way to improve the code it will be appreciated: **
using IRail.BLL.SAP;
using IRail.Entities.SAP.Report;
using IRail.WebAPI.Heplers;
using Logger;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Net;
using System.Net.Http;
using System.Web.Script.Serialization;
using System.Web.Services;
namespace IRail.WebAPI
{
public class EventInfo
{
public string QMNUM { get; set; }
public string QMART { get; set; }
public string STATUS { get; set; }
public string MAHUT_CODE { get; set; }
public string MAHUT_TXT { get; set; }
public string START_DATE { get; set; }
public string START_TIME { get; set; }
public string END_DATE { get; set; }
public string END_TIME { get; set; }
public string ZQMNUM { get; set; }
public string QMTXT { get; set; }
public string IKUN { get; set; }
public string ZLONG { get; set; }
public string LAT { get; set; }
public string TPLNR { get; set; }
public string ZZKM_NUM { get; set; }
public string ZZTOKM_NUM { get; set; }
}
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
[System.Web.Script.Services.ScriptService]
public class Events : System.Web.Services.WebService
{
public static readonly ILogger _logger = LogManager.GetLogger();
[WebMethod]
public string UpdateEvent(EventInfo eventInfo)
{
// create an instance of SapClient object an fill it with the input parameters,
// that passes by the url to the function using the eventInfo class.
SapClient SapArgs = new SapClient()
{
params_input = "",
QNUM = eventInfo.QMNUM,
QMART = eventInfo.QMART,
STATUS = eventInfo.STATUS,
MAHUT_CODE = eventInfo.MAHUT_CODE,
MAHUT_TXT = eventInfo.MAHUT_TXT,
START_DATE = eventInfo.START_DATE,
START_TIME = eventInfo.START_TIME,
END_DATE = eventInfo.END_DATE,
END_TIME = eventInfo.END_TIME,
ZQMNUM = eventInfo.ZQMNUM,
QMTXT = eventInfo.QMTXT,
IKUN = eventInfo.IKUN,
ZLONG = eventInfo.ZLONG,
LAT = eventInfo.LAT,
TPLNR = eventInfo.TPLNR,
ZZKM_NUM = eventInfo.ZZKM_NUM,
ZZTOKM_NUM = eventInfo.ZZTOKM_NUM,
ikunx = "",
ikuny = "",
operation_type = "",
returnZ = "",
returnM = "",
returnTrueCurves = "",
f = ""
};
string errorMsg = String.Empty;
string outputJson = String.Empty;
ApiHelper apiHelper = new ApiHelper();
try
{
// create an instance of JS Serializer.
var jss = new JavaScriptSerializer();
// serialize the object to convert it to json format.
JObject sapArgs = JObject.Parse(jss.Serialize(SapArgs));
// decerialize the object back from json format to pass the JSON string representation
// of the sapArgs object as the input to the callGPAsync method.
var dict = jss.Deserialize<Dictionary<string, string>>(sapArgs.ToString());
// create an instance of EventsEngine.
EventsEngine eventsEngine = new EventsEngine();
// assign the type of the event to the events object:
// check the event type.
SapArgs.operation_type = eventsEngine.CheckEventType(dict, ref errorMsg);
// assign the event type that has returned to the sapArgs object's operation_type parameter.
sapArgs["operation_type"] = SapArgs.operation_type; // "1";// set operation_type for test;
// if encountered an error return the content of it.
if (errorMsg != "") return "UpdateEvent ERROR: " + errorMsg;
_logger.Info($"Username: {Utils.GetUserName()}, UpdateEvent : {sapArgs.ToString()}, eventType :{SapArgs.operation_type}");
if (!string.IsNullOrWhiteSpace(apiHelper.getValueFromDict(dict, "IKUN")) && dict["IKUN"].ToString() == "Y")
{
var res = apiHelper.convertCoordiateWGSToITM(sapArgs).GetAwaiter().GetResult();
}
outputJson = apiHelper.callGPAsync(sapArgs).GetAwaiter().GetResult();
try
{
// if there is result from submitted job add operation_type
outputJson = outputJson.Replace("}", ", \"operation_type\" = \"" + SapArgs.operation_type + "\" }");
}
catch (Exception outputEx)
{
return "outputJson ERROR: " + outputEx;
}
var response = new HttpResponseMessage(HttpStatusCode.OK);
response.Content = new StringContent(outputJson, System.Text.Encoding.UTF8, "application/json");
return outputJson;
}
catch (Exception ex)
{
_logger.Error(" UpdateEvent ERROR : " + SapArgs.ToString() + ", eventType :" + SapArgs.operation_type + ", errorMsg :" + errorMsg);
_logger.Error(ex);
return "UpdateEvent ERROR: update failed on exception. please check logs.";
}
//0. check with documentation - what are the parameters - in sap document
//0. log -> input call
//1. properties input validation -
// A. all inputs are correct //2.4 in documents ---> function in BLL that does the validation
//2. if all ok - -- delete prev event
//3. call GP service to update new event
//4. return success + log reult
}
}
}
I did not try anything i just want to understand the logic.