Below is the document flow we are using,

GetM3Currencies is an IONAPI that is scheduled to call out every day at a certain time of day. We want to use the response from the API and use the response values to populate the request on the CallWebservice activity which calls out to a web service . The response to the IONAPI is in json format. Do we use the manual mapping? How do we take the json response and populate the web service request?
Thank you for your help.