LeBron James Producing Boxing Docu-Series ... for DAZN

Another huge move for LeBron James ... not the basketball player, the Hollywood mogul.

James -- through his media brand, Uninterrupted -- is launching a new show for DAZN called "40 Days" ... a docu-series which will follow top boxers as they prepare for major prize fights.

In fact, the first episode will follow Canelo Alvarez and Daniel Jacobs as they gear up for their May 4 fight in Las Vegas. Part 1 of the series is scheduled to premiere on April 23.

Canelo's participation is really no surprise considering he just signed a $365 MILLION contract with DAZN.

We're told LeBron and his business partner Maverick Carter are executive producing the Canelo episodes -- in association with DAZN and…