Mod: Change Nametags

The game development team once again delights fans with new features: now, if you have a desire, you can change the nickname above the player’s head with the help of the command. To do this, you need to install Mod: Change Nametags. Then give the player the nickname tag: <tag>, and that's it - the character's name will change! If you want to undo the changes, then the @s command will help you, which will return the previous nickname of the player. It's simple, but if suddenly it didn't work out the first time, here are the detailed instructions:
You write the command tag <player nickname> add "nametag: <new nickname above the player's head>.
If you add the @s command, then the former name of the player will return.

I don’t know if it’s necessary to rewrite the example given in the description. The text turned out to be smaller, 800 characters, I hope it's okay. There is simply nothing more to write here.