using System;

using System.Text.Json;

public class Program

{

    public static void Main()

    {

        var test = JsonSerializer.Deserialize<Test>("{}");

        Console.WriteLine(test.ImporterName);

    }

    public class Test {

        private Test() {

         ImporterName = "asdf"; 

        }

        public  Test(string importerName) {

         ImporterName = importerName;   

        }

        public string ImporterName { get; set; }

    }

}