var data = {
            'Name': 'Apple',
            'Type': 'Fruit',
            'RemarksList': [
              {
                  'Parameter': 'test 1',
                  'Comments': 'test 123'
              },
              {
                  'Parameter': 'test 2',
                  'Comments': 'abc 3455'
              }
            ]
        };



var url = "/Controller/Action";

            $.ajax({
                url: url,
                type: 'POST',
                dataType: 'application/json',
                data: data,
                success: function (data) {

                }
            });

[HttpPost]
        public ActionResult Save(Model model)
        {
            return View();
        }

public class Model
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public string Type{ get; set; }
        public List<Remarks> RemarksList { get; set; }
    }

public class Remarks
{
    public int Id { get; set; }
    public string Parameter { get; set; }
    public string Comments { get; set; }
}