using System;

public class Program

{

    public static void Main()

    {

        var sc_analytics_global_cookie="959d3c1789754dbcb9ff9757172af6df|True"; //Get SC_ANALYTICS_GLOBAL_COOKIE value and Replace in this line of code.

        var cookieValue=sc_analytics_global_cookie.Split('|')[0];

        var contactId= Guid.Parse(cookieValue).ToString();

        var guid = Guid.Parse(contactId);

        var bytes = guid.ToByteArray();

        var encodedId = Convert.ToBase64String(bytes);

        Console.WriteLine("Robomongo query to Fetch Contact Record from Contact Collection:");

        Console.WriteLine("db.getCollection('Contacts').find({" + string.Format("_id:new BinData(3, '{0}')", encodedId) + "})");

    }

}