[TypeConverter(typeof(HumanTypeConvert))]
    public class model
    {
        public string id { get; set; }
        public model Name { get; set; }
    }

    public class HumanTypeConvert : TypeConverter
    {
        public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
        {
            if (value is string)
            {
                model h = new model();
                h.id = value as string;
                return h;
            }
            return base.ConvertFrom(context, culture, value);
        }
    }