Wall smudges from moving furniture?

Hi, I have eggshell-finished, light yellow-colored painted walls in my new apartment, and while moving in, they got scuffed by furniture and dirt in several places. I tried using a wet rag and a Mr Clean magic eraser to clean them, and all while both removed the dirt/smudges, it also left a dark spot that looks like a watermark. Does anyone have suggestions as to how the walls might be cleaned? Thanks so much for your help!