Player Data

[Anglinex]

How can I find the player data on the server I'm hosting and how can I identify what data belongs to who?  I want to be able to reset a specific player without nuking the whole world. 
Please and thank you.

[Maelstrom]

 

Sorry @Jeff Walls, I couldn't resist!  

[Anglinex]

But does someone know the answer?

[Maelstrom]

I do not.  If you are on Discord, you may want to pose your question there as well.