API : Assigning layouts to campaign

I’m in 1.8.
I used that link : https://github.com/xibosignage/oauth2-xibo-cms and clicked download.
We are planning on upgrading our API to 2.0 as soon as possible…

Im the mean time, I’m sorry for being insistent, but I really need to know how to do this : API - Troubles trying to get the ID of a playlist, region, and widget