StockX made a ton of noise after an investment from Cleveland Cavaliers owner Dan Gilbert last year, but the site's latest venture could prove to be its biggest yet.

Today, the Detroit-based "stock market of things" has announced a partnership with Eminem. As a Detroit native and lifelong sneakerhead, Eminem will help StockX create exclusive content and offer sneakers from his personal collection, the first of which will be a pair of the rapper's extremely coveted Jordan 4 collaboration with Carhartt

"Sneakers have always been a huge interest of mine," Eminem said. "I really like the fact that sneakers are a big part of what StockX is doing. When I found out that they happen to be doing it from downtown Detroit, it made even more sense to get involved."

In addition to the new partnership, Eminem and his manager Paul Rosenberg will also invest in the startup.

To enter the giveaway, all you have to do is complete a successful transaction on StockX, or refer a new member, between now and Thursday, June 23. The grand prize—a size 11 Eminem x Carhartt x Air Jordan 4—isn't the only chance to win either. Second place gets is a set of adidas Yeezy Boosts, and the third prize is a collection of Air Jordan 1s

Read up on all the fine print here.