fix: serialize streetnamelocalid

src/RoadRegistry.BackOffice/Infrastructure/Converters/StreetNameLocalIdConverter.cs

@@ -0,0 +1,25 @@
+namespace RoadRegistry.BackOffice.Infrastructure.Converters
+{
+    using System;
+    using Newtonsoft.Json;
+
+    public class StreetNameLocalIdConverter : JsonConverter<StreetNameLocalId?>
+    {
+        public override StreetNameLocalId? ReadJson(JsonReader reader, Type objectType, StreetNameLocalId? existingValue, bool hasExistingValue, JsonSerializer serializer)
+        {
+            if (reader.Value?.ToString() is null)
+            {
+                return null;
+            }
+
+            return new StreetNameLocalId(int.Parse(reader.Value!.ToString()!));
+        }
+
+        public override void WriteJson(JsonWriter writer, StreetNameLocalId? value, JsonSerializer serializer)
+        {
+            if (!value.HasValue) return;
+
+            writer.WriteValue(value.Value.ToInt32());
+        }
+    }
+}

src/RoadRegistry.BackOffice/JsonSerializerSettingsProvider.cs

@@ -40,11 +40,11 @@ public static JsonSerializerSettings CreateSerializerSettings()
         settings.Converters.Add(new NumberedRoadNumberConverter());
         settings.Converters.Add(new RoadSegmentNumberedRoadDirectionConverter());
         settings.Converters.Add(new RoadSegmentNumberedRoadOrdinalConverter());
+        settings.Converters.Add(new StreetNameLocalIdConverter());
 
         foreach (var converter in WellKnownJsonConverters.Converters)
         {
             settings.Converters.Add(converter);
-
         }
 
         return settings;