Modiv Media, a Boston-area based mobile retail couponing and advertising firm, has received $8 million in its first round of funding, according to a regulatory filing, picked up by PEHub. Investors in the round include Ignition Partners, Oak Investment Partners and SeaPoint Ventures. The company launched My Subway Mobile, a program that uses Modiv Media’s technology to drive participating mobile users to the sandwich shops….the campaign is running at more than 500 Subway franchises.