[JsonConverter(typeof(StringEnumConverter))]
    public enum Comparison
    {
        Eq = 1,
        Lt,
        Lte,
        Gt,
        Gte
    }

    public class Condition
    {
        public List<Condition> And { get; set; }
        public List<Condition> Or { get; set; }
        public Comparison? Comparison { get; set; }
        public String ActivityId { get; set; }
        public String ComparisonData { get; set; }
    }


{
   "and":[
      {
         "comparison":"Eq",
         "activityId":"b4bafd22-c55c-4801-9112-ac6edbe09200",
         "comparisonData":"123546"
      },
      {
         "or":[
            {
               "comparison":"Lte",
               "activityId":"2727c916-8636-4c37-ae78-00df63984c2b",
               "comparisonData":"2"
            },
            {
               "comparison":"Gt",
               "activityId":"ba44848b-99f1-4508-b443-fb46b936a106",
               "comparisonData":"7"
            }
         ]
      }
   ]
}