Hi,
I am Viral Patel and I am a Symfony developer with more than 4 years of good experience in developing and maintaining websites. I have worked in all Symfony version.
I can see that you are facing some issues in implementing serialization in Symfony it happens because it's complicated. You can provide entity and controller code and I will solve the issue for you as I have done these kind of implementation.
Please provide all necessary requirements and we can discuss it.
Thank You,
Viral