Custom JSON Responses for Lindy Webhook Actions in Unit Testing

Is there a way for the Lindy Webhook Received action to return a JSON response in the format that I desire vs a link to the next action? I'd like to use this approach to write unit test for my workflows to stay confident that any prompt changes I do does not introduce regressions. Would anyone have other thoughts on how to write unit test (response/request type) to make sure things are still working as expected?