Bump on the bracket

Rhino Rhino for Windows
1

Hello, i am trying to create this bracket, it is easy to model but i could not find any way to create the bump on the middle, any idea to create it?
eb45da8cc9d817ee8d5311b425d5d486angolare1res.jpg (1)
Untitled.3dm (531.2 KB)

2

any ideas?