Build an integration that can call a REST endpoint with different bodies (payloads)

Summary

Is there a way to build an integration that will allow us to call the same REST endpoint but with a different body?

Content

We have been given a REST endpoint that accepts different JSON formats.  Our integration is reading an Oracle database table which is storing the JSON format as string in a CLOB column.  The integration is meant to loop through each record and call the same REST endpoint and pass the JSON string in the body.  The issue is the JSON string can have several different formats.  We don't know a way to not have to map each of the dfiferent formats in the integration.  Ideally, we would just like to map the entire JSON string as 1 paramater and send