The ex-husband of a “Real Housewives of New Jersey” cast member and a reputed mobster have pleaded not guilty to charges that they conspired to assault the woman’s current husband.

Thomas Manzo, of Franklin Lakes, and John Perna, of Cedar Grove, entered their pleas Wednesday during an arraignment hearing conducted via videoconferencing. Federal prosecutors say Manzo hired Perna to commit the attack in exchange for a lavish wedding reception at a restaurant where Manzo is an owner.

Manzo is the ex-husband of Dina Manzo, while Perna was identified as a soldier in the Lucchese crime family, according to prosecutors.