try any of the off the shelf stuff; carpet cleaner, furniture cleaner, pet stain remover, whatever. the stuff should be safe for colors and to the material, not to mention the sofa is probably scotchguarded from the factory and microfiber materials are supposed to be stain resistant and tough.
then again, you don’t want to smudge the ink all over the place and end up with blue clouds. call a furniture repair shop.
