Jimmy Donaldson, a.k.a. MrBeast, is the world's top YouTuber. Emma McIntyre/Getty Images for Prime Video A version of this post appears in the CMO Insider newsletter. You can sign up for Business Insider's weekly marketing newsletter here. MrBeast is coming to Madison Avenue. The YouTuber's company, Beast Industries, is on the hunt for a VP of agency partnerships, CMO Insider can exclusively report. This person will be responsible for serving as the "primary bridge between the MrBeast ecosy...