Automatic task failed

Hello everyone, sorry if that case can seem as easy but I can't understand, why my data that I implement from RESTful service can't be understanded by bizagi.

I implement RESTful web service, then I add implemented interface with on integration part in defining integration interfaces, then I run my model, and when I start my process I get error that content type is wrong. Then I edit content type in interface on "application/json". However I continue to get that error. Please help me, what I do wrong. I already know that the request reaches the server, and data when I get it in other way also gets properly. You can see my attacments.