using System;

using System.Text.RegularExpressions;

public class Program

{

    public static void Main()

    {

         string key = @"WSB7_J_20220609_0635_DEP-06092_3805-JomaxAdGroups-accountName-pgundu6645-jwtIssuedAt-1655163719";

         Regex regex = new Regex(string.Format("{0}(.*?){1}", Regex.Escape("accountName-"), Regex.Escape("-jwtIssuedAt")));

         key = regex.Replace(key, "accountName-****-jwtIssuedAt");

         Console.WriteLine(key);

    }

}