Thanks for your very quick reply! Yes, I’ve read and re-read that section many times!
It does sort of infer that it goes in the header, doesn’t it? It says for the GET method, you can use apikey or replace it by base64 coded Authorization (I tried that too!).
Then it shows the POST method with base64 coded Authorization in the header! So that is why I am confused.
Anyway, I’ve tried to follow your suggestion. Is this what you meant?
I got the following response: {“success”:false,“error”:“Required fields ‘data’, or ‘base64data’ missing”}
What am I doing wrong? Thanks for your help!