fix json enum

PlaylistShared.Api/Program.cs

@@ -9,6 +9,7 @@ using PlaylistShared.Api.Entities;
 using PlaylistShared.Api.Services;
 using System.IdentityModel.Tokens.Jwt;
 using System.Text;
+using System.Text.Json.Serialization;
 
 namespace PlaylistShared.Api;
 
@@ -113,7 +114,11 @@ public class Program
             });
         });
 
-        builder.Services.AddControllers();
+        builder.Services.AddControllers()
+            .AddJsonOptions(options =>
+            {
+                options.JsonSerializerOptions.Converters.Add(new JsonStringEnumConverter());
+            });
         builder.Services.AddEndpointsApiExplorer();
         builder.Services.AddSwaggerGen();