Dictionary<string, string> dictonary = new Dictionary<string, string>();

dictonary count = 2

	{[A,22]}
	{[B,40]}

List<OtherModel> otherModelList = new List<OtherModel>();

public class OtherModel
    {
        public string Name{ get; set; }
        public intAge{ get; set; }
    }

foreach (KeyValuePair<string, string> ol in dictonary)
            {
                var otherModel = new OtherModel()
                {
                    Name = ol.Key,
                    Age = ol.Value
                };
                otherModelList.Add(otherModel);
            }

var othersObject = JsonConvert.SerializeObject(otherModelList).ToString();
othersObject = [{"A":22},{"B":40}]