How get value of widget in a view/dashboard via API

Hello, I’ve notive all changes about dashboard and view in API,

But there is something I don’t know how to do.
I want read the value of a widget in a view (like before 3.2 update).

I prefer use widget to get value with correct filters, because I have a scanner running everyday reading 20-30 widgets identified by ID, and store them in another index.