WWE sent out the following:

Not only can WWE Universe members meet their favorite Superstars at WrestleMania Axxess, they can meet boxing legend and 2012 WWE Hall of Fame Inductee Mike Tyson! “Iron” Mike will be at WrestleMania Axxess at the Miami Beach Convention Center on Friday, March 30 from 8:00 – 10:00 p.m.

TICKETS
A limited amount of tickets will be sold for an exclusive photo opportunity at the WWEShop stand on Thursday from 6:00 p.m. – 10:00 p.m. and Friday from 6:00 p.m. – 8:00 p.m. (FULL SUPERSTAR SIGNING SCHEDULE)

MORE TYSON
Official Website
Apparel
Twitter
WWE Hall of Fame profile