Hi Diego
From your post, it looks like you have all the details - not really sure what your question is? Could you please elaborate? Also, would be good it you can provide your PI/PO version & SP level and whether dual stack or single.
Regarding the JSON part, I noticed that you found the modules I've developed. Do refer to the following links to get further details on the configuration parameters.
JSONTransformBean Part 1: Converting JSON content to XML
JSONTransformBean Part 2: Converting XML to JSON content
Rgds
Eng Swee