Couldn't find anything regarding this when I googled around, except for this post from 3 years ago
4. No excessive signature length and text are allowed. 4 lines is the maximum signature space allowed. 500 Characters is also the maximum allowed. If you are getting a error message, reduce the size of your signature. Any signature to be in violation of this, will have their account suspended.
I've seen a ton of signatures that are longer than 4 lines, heck, mine's been this way since I've joined and nobody's ever come to me about it. So I assume the post I've found is out of date.
So what are the current signature rules, and/or where can I read them?
I am the salt of the earth.
Rage is my body and salt is my blood.
I have created over a thousand excuses.
Unknown to winning, nor known to humility,
Have withstood bans to write many forum rants.
Yet, those hands will never hold that L.
So as I play,
UNLIMITED SALT WORKS