The following is from WWE.com:
Special start time for Miami live Raw event
WWE Universe, the upcoming Monday Night Raw live event emanating from the AmericanAirlines Arena in Miami, Fla., this Monday will start at precisely 7:30 p.m. ET.
Please note: Some previously purchased/printed tickets for this live event list a previous start time of 8:15 p.m. The revised special start time for the show is 7:30 p.m. Any ticket distributed with the old start time of 8:15 p.m. is still valid for admission this Monday night at the American Airlines Arena.