@Ivy_Saskia_Notion_IS , that is exactly what it does automatically for you - an array of objects which you would use in the next step.
Perhaps you could share your workflow where it behaves differently?
Here’s a generic example of the workflow. The HTTP Request node will return an array of JSONs if JSON is what your API returns.
That is the input for the next node you want to add after HTTP Request will have data in the format [{<JSON>}, {<JSON>}, {<JSON>}]