diff --git a/Source/Engine/Serialization/JsonSerializer.cs b/Source/Engine/Serialization/JsonSerializer.cs
index 127fa4d87..b3bd51d6f 100644
--- a/Source/Engine/Serialization/JsonSerializer.cs
+++ b/Source/Engine/Serialization/JsonSerializer.cs
@@ -7,6 +7,7 @@ using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 using System.Text;
 using System.Threading;
+using FlaxEngine.GUI;
 using FlaxEngine.Json.JsonCustomSerializers;
 using FlaxEngine.Utilities;
 using Newtonsoft.Json;
@@ -119,6 +120,115 @@ namespace FlaxEngine.Json
         }
     }
 
+    /// <summary>
+    /// Serialize SoftObjectReference as Guid in internal format.
+    /// </summary>
+    /// <seealso cref="Newtonsoft.Json.JsonConverter" />
+    internal class MarginConverter : JsonConverter
+    {
+        /// <inheritdoc />
+        public override void WriteJson(JsonWriter writer, object value, Newtonsoft.Json.JsonSerializer serializer)
+        {
+            var valueMargin = (Margin)value;
+
+            writer.WriteStartObject();
+            {
+                writer.WritePropertyName("Left");
+                writer.WriteValue(valueMargin.Left);
+                writer.WritePropertyName("Right");
+                writer.WriteValue(valueMargin.Right);
+                writer.WritePropertyName("Top");
+                writer.WriteValue(valueMargin.Top);
+                writer.WritePropertyName("Bottom");
+                writer.WriteValue(valueMargin.Bottom);
+            }
+            writer.WriteEndObject();
+        }
+
+        /// <inheritdoc />
+        public override void WriteJsonDiff(JsonWriter writer, object value, object other, Newtonsoft.Json.JsonSerializer serializer)
+        {
+            var valueMargin = (Margin)value;
+            var otherMargin = (Margin)other;
+            writer.WriteStartObject();
+            if (!Mathf.NearEqual(valueMargin.Left, otherMargin.Left))
+            {
+                writer.WritePropertyName("Left");
+                writer.WriteValue(valueMargin.Left);
+            }
+            if (!Mathf.NearEqual(valueMargin.Right, otherMargin.Right))
+            {
+                writer.WritePropertyName("Right");
+                writer.WriteValue(valueMargin.Right);
+            }
+            if (!Mathf.NearEqual(valueMargin.Top, otherMargin.Top))
+            {
+                writer.WritePropertyName("Top");
+                writer.WriteValue(valueMargin.Top);
+            }
+            if (!Mathf.NearEqual(valueMargin.Bottom, otherMargin.Bottom))
+            {
+                writer.WritePropertyName("Bottom");
+                writer.WriteValue(valueMargin.Bottom);
+            }
+            writer.WriteEndObject();
+        }
+
+        /// <inheritdoc />
+        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, Newtonsoft.Json.JsonSerializer serializer)
+        {
+            var value = (Margin?)existingValue ?? new Margin();
+            if (reader.TokenType == JsonToken.StartObject)
+            {
+                while (reader.Read())
+                {
+                    switch (reader.TokenType)
+                    {
+                    case JsonToken.PropertyName:
+                    {
+                        var propertyName = (string)reader.Value;
+                        var propertyValue = (float)reader.ReadAsDouble();
+                        switch (propertyName)
+                        {
+                        case "Left":
+                            value.Left = propertyValue;
+                            break;
+                        case "Right":
+                            value.Right = propertyValue;
+                            break;
+                        case "Top":
+                            value.Top = propertyValue;
+                            break;
+                        case "Bottom":
+                            value.Bottom = propertyValue;
+                            break;
+                        }
+                        break;
+                    }
+                    case JsonToken.Comment: break;
+                    default: return value;
+                    }
+                }
+            }
+            return value;
+        }
+
+        /// <inheritdoc />
+        public override bool CanConvert(Type objectType)
+        {
+            return objectType == typeof(Margin);
+        }
+
+        /// <inheritdoc />
+        public override bool CanRead => true;
+
+        /// <inheritdoc />
+        public override bool CanWrite => true;
+
+        /// <inheritdoc />
+        public override bool CanWriteDiff => true;
+    }
+
     /*
     /// <summary>
     /// Serialize Guid values using `N` format
@@ -219,6 +329,7 @@ namespace FlaxEngine.Json
             settings.Converters.Add(ObjectConverter);
             settings.Converters.Add(new SceneReferenceConverter());
             settings.Converters.Add(new SoftObjectReferenceConverter());
+            settings.Converters.Add(new MarginConverter());
             settings.Converters.Add(new VersionConverter());
             //settings.Converters.Add(new GuidConverter());
             return settings;
diff --git a/Source/Platforms/DotNet/Newtonsoft.Json.dll b/Source/Platforms/DotNet/Newtonsoft.Json.dll
index 17df31d86..b08068dd3 100644
--- a/Source/Platforms/DotNet/Newtonsoft.Json.dll
+++ b/Source/Platforms/DotNet/Newtonsoft.Json.dll
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:616780417730a6371909713a2d8150347870e67ed52803642caef37e8bda1891
-size 630272
+oid sha256:7ed0cb43a692d86f2d47bfc93475e554ee8a70b33187b1e1d2356a7d4f25fffa
+size 629760
diff --git a/Source/Platforms/DotNet/Newtonsoft.Json.pdb b/Source/Platforms/DotNet/Newtonsoft.Json.pdb
index 68e8489b6..9d8502e2c 100644
--- a/Source/Platforms/DotNet/Newtonsoft.Json.pdb
+++ b/Source/Platforms/DotNet/Newtonsoft.Json.pdb
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:9d4fc76d2ef9b0cd7b88da95f4894d9cc924703af0b02e052f8e78446f75e2d9
-size 239080
+oid sha256:5e5b77e2864fee56c380d85c8d1488713c5ba5deacb9005d125d9e47629014e8
+size 249884
diff --git a/Source/Platforms/DotNet/Newtonsoft.Json.xml b/Source/Platforms/DotNet/Newtonsoft.Json.xml
index fb9404249..c1d3cfd3d 100644
--- a/Source/Platforms/DotNet/Newtonsoft.Json.xml
+++ b/Source/Platforms/DotNet/Newtonsoft.Json.xml
@@ -1691,6 +1691,15 @@
             <param name="value">The value.</param>
             <param name="serializer">The calling serializer.</param>
         </member>
+        <member name="M:Newtonsoft.Json.JsonConverter.WriteJsonDiff(Newtonsoft.Json.JsonWriter,System.Object,System.Object,Newtonsoft.Json.JsonSerializer)">
+            <summary>
+            Writes the JSON representation of the object diff compared to other instance of the object (the same type).
+            </summary>
+            <param name="writer">The <see cref="T:Newtonsoft.Json.JsonWriter"/> to write to.</param>
+            <param name="value">The value.</param>
+            <param name="other">The other value (the same type).</param>
+            <param name="serializer">The calling serializer.</param>
+        </member>
         <member name="M:Newtonsoft.Json.JsonConverter.ReadJson(Newtonsoft.Json.JsonReader,System.Type,System.Object,Newtonsoft.Json.JsonSerializer)">
             <summary>
             Reads the JSON representation of the object.
@@ -1722,6 +1731,12 @@
             </summary>
             <value><c>true</c> if this <see cref="T:Newtonsoft.Json.JsonConverter"/> can write JSON; otherwise, <c>false</c>.</value>
         </member>
+        <member name="P:Newtonsoft.Json.JsonConverter.CanWriteDiff">
+            <summary>
+            Gets a value indicating whether this <see cref="T:Newtonsoft.Json.JsonConverter"/> can write JSON for object difference.
+            </summary>
+            <value><c>true</c> if this <see cref="T:Newtonsoft.Json.JsonConverter"/> can write JSON diff; otherwise, <c>false</c>.</value>
+        </member>
         <member name="T:Newtonsoft.Json.JsonConverter`1">
             <summary>
             Converts an object to and from JSON.