This class converts a list serialized into a Dictionary and when you serialize back goes to a List again

ListDictionaryConverter.cs

public class ListDictionaryConverter<T> : JsonConverter where T : Entity
    {
        public override bool CanConvert(Type objectType)
        {
            return (objectType == typeof(object));
        }

        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
        {
            Dictionary<string, T> result;

            if (reader.TokenType == JsonToken.StartArray)
            {
                result = new Dictionary<string, T>();

                var token = JObject.ReadFrom(reader);

                foreach(var value in token)
                {
                    var item = value.ToObject<T>(serializer);
                    result.Add(item.Id, item);
                }

            }
            else
            {
                result = (Dictionary<string, T>)serializer.Deserialize(reader, typeof(Dictionary<string, T>));
            }

            return result;
        }

        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
        {
            List<T> list = new List<T>();

            if (value is IDictionary dictionary)
            {
                foreach(var v in dictionary.Values)
                {
                    list.Add((T)v);
                }

                serializer.Serialize(writer, list);

            }
        }
    }