Wrestling is a profession of John Cena.
John Cena . He has also headlined WWE 's flagship event , WrestleMania , on five different occasions ( WrestleManias 22 , 23 , XXVII , XXVIII , and 29 ) over the course of his career , as well as many others pay-per-view events . World Wrestling Entertainment , Inc. ( d/b/a WWE ) is an American publicly traded , privately controlled entertainment company that deals primarily in professional wrestling , with revenue also coming from film , music , video games , product licensing , and direct product sales . WWE SmackDown . '' '' ' [ [ WWE ] ] SmackDown '' '' ' , also currently referred to as '' '' ` SmackDown Live '' '' ' ( stylized as '' '' ` SmackDown LIVE '' '' ' ) or simply '' '' ` SmackDown '' '' ' , is a [ [ professional wrestling ] ] [ [ television program ] ] that debuted on August 26 , 1999 .