Adds subscriptions

src/Web/Features/Contents/Data/ContentDbContext.cs

@@ -21,13 +21,23 @@ public class ContentDbContext(
             .Property(c => c.CreatedAt)
             .ValueGeneratedOnAdd()
             .HasDefaultValueSql("CURRENT_TIMESTAMP");
-  
+
         modelBuilder
             .Entity<Content>()
             .HasOne(c => c.Creator)
             .WithMany()
             .HasForeignKey(c => c.CreatedBy);
 
+        modelBuilder
+            .Entity<Subscription>()
+            .HasOne(c => c.Creator)
+            .WithMany()
+            .HasForeignKey(c => c.CreatorId);
+
+        modelBuilder
+            .Entity<Subscription>()
+            .HasKey(s => new { s.CreatedBy, s.CreatorId });
+
         modelBuilder
             .Entity<Creator>()
             .OwnsOne<About>(x => x.About);