How to clean fisher price bassinet

A lady gave me this bassinet, but it’s so dirty! How can I clean it? I took the mattress pad out, but that’s the only part that’s removable. It’s way too dirty for just a wipe down. I was thinking maybe soak it in the tub in a water/bleach mixture? Just not sure how much to use as I don’t want to ruin the design. Any ideas of he easiest way to clean this?