Wcf web service return json format data

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C#

WCFServices

Hello

I have created WCF webservice using c# and it return json format data. My code is like below:

public string SampleService(Stream data)
{
	string sJSONdata = "";

	StreamReader reader = new StreamReader(data);
	sJSONdata = reader.ReadToEnd();

	//'now convert the JSON into a data table
	DataTable dt = GetJSONTable(sJSONdata);
	dt.TableName = "Customer";

	Dictionary<string, string> dict = new Dictionary<string, string>();
	foreach (DataRow rs in dt.Rows)
	{
	    dict = new Dictionary<string, string>();
	    foreach (DataColumn col in dt.Columns)
	    {
	        dict.Add(col.ColumnName, rs[col].ToString());
	    }
	}
	return (new JavaScriptSerializer().Serialize(dict));
}

And I get the following output:
{ "SampleServiceResult": "{\"Id\":\"1\",\"Name\":\"xyz\",\"email\":\"xya@test.com\"}" }

I want output as below:
{ "SampleServiceResult": {"Id":"1","Name":"xyz","email":"xya@test.com"} }

In output it add "\" escape character in output. How can I remove this and return valid json in output.

Thanks

What I have tried:

I have tried to replace "\" but it doesn't work.