Simple serialization and deserialization of an XRM Entity with XrmEntitySerializer

Program.cs

using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Query;
using Microsoft.Xrm.Tooling.Connector;
using Newtonsoft.Json;
using System;
using System.Configuration;
using System.IO;
using System.Linq;
using System.Net;
using System.ServiceModel;
using XrmEntitySerializer;

namespace Test_XrmEntitySerializer
{
    class Program
    {
        public static void Main(string[] args)
        {
            try
            {
                ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
                using (CrmServiceClient _client = new
                      CrmServiceClient(ConfigurationManager.ConnectionStrings["CRMConnectionString"].ConnectionString))
                {
                    IOrganizationService orgService = _client.OrganizationServiceProxy;

                    QueryByAttribute query = new QueryByAttribute("account");
                    query.Attributes.Add("statuscode");
                    query.Values.Add(1); 
                    query.TopCount = 1;
                    query.ColumnSet = new ColumnSet(true);

                    Entity account = orgService.RetrieveMultiple(query).Entities.FirstOrDefault();

                    EntitySerializer serializer = new EntitySerializer();

                    using (JsonTextWriter writer = new JsonTextWriter(new StreamWriter("account.json")))
                    {
                        serializer.Serialize(writer, account);
                    }

                    Entity deserializedAccount = default(Entity);
                    using (JsonTextReader reader = new JsonTextReader(new StreamReader("account.json")))
                    {
                        deserializedAccount = serializer.Deserialize<Entity>(reader);
                    }

                    Console.WriteLine("Account Name: " + deserializedAccount.GetAttributeValue<string>("name"));
                    Console.ReadKey();
                }

            }
            catch (FaultException<OrganizationServiceFault> ex)
            {
                string message = ex.Message;
                throw;
            }
        }
    }
}

Sample project created with D365DeveloperExtensions.
XrmEntitySerializer can be easily installed from NuGet with the following command: Install-Package XrmEntitySerializer.9