Nothing much larger than your current one, signatures are simply a device to leave a small impression of oneself at the end of a statement. Even John Hancock kept it simple on the Declaration of Indepence, and that dude had a major ego.
Not really, he was actually a very notable person and therefore had quite a bit of power with the presence of his name.
“This body is not me. I am not caught in this body.
I am life without limit.”