Serialization of Game State Into Web Server

I am trying to build a mini 3d game builder on unity. where user can create game with provided model and script them save the game where other users can play it. this going to be a web based game. Now, I can use inventory techniques to provide model and script. serialisation to save the game state.

What is the best way to serialise the data/ game state into web server ? is it possible to turn it into prefabs ? and how Can I load it when user want to play ?

Thanks in advance for all help and supper and please put me in right direction if theres a better way to do it.

Regards Plaban