The answer is on the comments but here is an actual answer.
A black object has too little information on the shadows. All information about what parts of the objects are dark because of them is merged with the blackness of the object itself.
The same happens to a white object. What is white because a reflection or what is because it is by the color.
Saturated colors like red or green are easier to change because they have the discting information. This is color, this is shadow, this is highlight.
So the ony thing you can do is play with the curves to add more shadows.
I added an extra layer, desaturated it, moved the levels to only have some shadowy zones and aplied a gausiann blur. Use multiply blending mode.
As you can see you only have stains of noise. Probably it would be better to paint shadows by hand in this case.
But the painfull truth is that not only you do not have detail because the blackness of the couch but because the photo is totally flat because you use the built in flash.
I understand you can not shoot in RAW, but next time try to.
1) Not use the built in flash.
2) Use a tripod and shoot an aditional image overexposed. Use this second image as a source for the couch information.