I mean, I assume you're going to buy this song regardless of the chart quality because it's Hey F***ing Ya, the greatest karaoke song of the past two decades. Lucky for you, the bass chart is pretty enjoyable without being hard.
Before the first chorus, you're mimicking the strum pattern of the guitar on an electric bass. But after that you're playing a neat synth bass pattern with a simple but very enjoyable rhythm-- a single note, four notes in sequence, a single note, four notes in sequence. It could be repetitive, but the weird time signature (the song is in 11/4) combined with the constant movement keeps it very interesting.