Adding a body transformation using the endpoint designer is very straightforward, you can use the same examples that are set out in the API Definition Object configuration transformation documentation with the dashboard:
Step 1: Create a new Endpoint and select the “Body Transforms” plugin
Step 2: Select your input type, and then add the template you would like to use to the input box market “Template”
Step 3: If you have sample input data, you can use the input box to add it, and then test it using the “Test” button.
As you can see from the screenshot above, we’ve already done this and you can see the sample output of the transformation in the “Output” field.