This one has been bugging me, so I took some time to recreate the "Using GET with an Authorization Header" here, in R running in an Alteryx workflow, (attached). There's a fair bit of R code in the R tool, but otherwise it's a nice, simple workflow...
In the beginning text field, you'll need to provide your:
- public key
- secret key
... which sounds like a lot, but is straightforward if you're in S3 much. From there, the workflow should list everything returned by the query thus defined; presumably from there you could use the usual Alteryx tools to parse objects of interest.
Hope that helps!