As a proof of concept, I setup a working flow that downloads a CSV file, renames the keys (using a Rename Keys node) so the keys match the table field names that the data will eventually be imported into. Then, using a MySQL node, the workflow successfully imports the data into the MySQL table.
Now I would like to return the entire output of the Rename Keys node as JSON so that the workflow behaves like an API call triggered by a Webhook. No matter what I try, I can only receive the first line of the data from the Rename Keys node instead of the entire JSON data. It seems like the Rename Keys node passes a list of strings instead of the entire JSON payload.
How do I get the entire payload from a Rename Keys node into the body of a Webhook response?