Goal: Use crypto exchange API to get my historical transactions in JSON into variable $Response. See the actual script in the Exchanges database on Dropbox and compare it to the GDAX API docs below. Feel free to duplicate and edit the "Exchange API Update" script.
Exchange API Docs, GDAX:
Authentication: GDAX | API Reference
Fills: GDAX | API Reference
Database with script: Dropbox - Exchanges.fmp12