using System;
using System.Text.RegularExpressions;

public class Test
{
	public static void Main()
	{
		// Copiado diretamente do JSON Orignal
		var json = "{\"novosPedidos\":[],\"pedidos\":[{\"Apagar\":\" 633.56\"}]}";
        var newJson = json.Replace(":\"\u00A0", ":\"");
        var newJsonWithRegex = Regex.Replace(json, @"[:][""]\s+", ":\"");
        Console.WriteLine(newJson);
        Console.WriteLine(newJsonWithRegex);
        
        // Antigo
		json = "{\"novosPedidos\":[],\"pedidos\":[{\"Apagar\":\" 633.56\"}]}";
        newJson = json.Replace(":\" ", ":\"");
        Console.WriteLine(newJson);
	}
}