Fix numeric serialization

src/Artemis.Core/Constants.cs

@@ -62,13 +62,13 @@ namespace Artemis.Core
 
         internal static JsonSerializerSettings JsonConvertSettings = new()
         {
-            Converters = new List<JsonConverter> {new SKColorConverter(), new ForgivingIntConverter()}
+            Converters = new List<JsonConverter> {new SKColorConverter(), new NumericJsonConverter(), new ForgivingIntConverter()}
         };
 
         internal static JsonSerializerSettings JsonConvertTypedSettings = new()
         {
             TypeNameHandling = TypeNameHandling.All,
-            Converters = new List<JsonConverter> {new SKColorConverter(), new ForgivingIntConverter()}
+            Converters = new List<JsonConverter> {new SKColorConverter(), new NumericJsonConverter(), new ForgivingIntConverter()}
         };
 
         /// <summary>

src/Artemis.Core/JsonConverters/NumericJsonConverter.cs

@@ -0,0 +1,25 @@
+using System;
+using Newtonsoft.Json;
+
+namespace Artemis.Core.JsonConverters
+{
+    internal class NumericJsonConverter : JsonConverter<Numeric>
+    {
+        #region Overrides of JsonConverter<Numeric>
+
+        /// <inheritdoc />
+        public override void WriteJson(JsonWriter writer, Numeric value, JsonSerializer serializer)
+        {
+            float floatValue = value;
+            writer.WriteValue(floatValue);
+        }
+
+        /// <inheritdoc />
+        public override Numeric ReadJson(JsonReader reader, Type objectType, Numeric existingValue, bool hasExistingValue, JsonSerializer serializer)
+        {
+            return new Numeric(reader.Value);
+        }
+
+        #endregion
+    }
+}