Multiplayer server and chat service

Hi,

Are there any services offering a context to host a multiplayer Phaser game with chat? I know how to do it myself with socket.io, mongodb, … but I would like to know the existing external solutions for a professional and scalable project. Either a service offering the whole (user management, rooms, chat), or several services combined (1 for user management, room, another for the chat).
Does anyone have any leads on this, or even tried these solutions?