Xano : Error parsing JSON


I am trying to post a Json to Xano.
I am using the standard Bubble API conector. If i initialize the call everything it is ok. If i run the json directly in XANO everything it is ok.
But when i run a workflow calling the post API a parsing error appear.
I leave a img with the error.
Anybody could help me?

Meet the same problem. How it solved : added json to arbitrary text and then xano correctly worked with this json
Снимок экрана 2022-06-07 в 11.45.50
Снимок экрана 2022-06-07 в 11.45.58