Substance painter UV map in Unity

HI,

Substance painter's auto UV unwrap seems so much better than Blender's. Problem is, I don't know how to use the UV map that substance painter generates when I bring my fbx model into Unity. So coming from blender, the fbx does not have a UV map. When I open the fbx in substance painter, it creates its own UV map (which is way better than blenders) and then I can paint my texture. But when I open the fbx in Unity, it still has no UV map, how can I assign the map that substance painter uses?

Thanks

 

Did you export the model from substance painter?