Marbles has about 15 million subscribers on her YouTube channel. She previously has been unrepresented by a Hollywood talent agency.
Born and raised in Rochester, N.Y., Marbles — whose real name is Jenna Mourey — joined YouTube in 2010. She now lives in Santa Monica, Calif.
CAA said it will work to create opportunities for Marbles across all areas, including digital distribution, film, TV, distribution partnerships, personal appearances and publishing.
Among her other deals, Marbles has hosted a weekly pop-music show on SiriusXM, under a deal between YouTube and the satellite radio service. She is also slated to appear in “Smosh: The Movie,” from YouTube comedy duo Smosh, to be released this summer.