Is there a recommended replacement for "Global World Saved Data" in 1.13+?

[Tictim]

It seems like World Saved Data system has changed now, with restrictions such as server-side only and no Global World Saved Data. Is there a thing that I can use to store and access data that exists only one per game? A hacky solution would be like attach capability to overworld and retrieve from there whenever needed, but I would like to know if there's more proper solution.

[diesieben07]

11 hours ago, Tictim said:

A hacky solution would be like attach capability to overworld and retrieve from there whenever needed

Nothing hacky about it. This is what you should do and this is how "global" WSD worked, too.