Classic ASP - Create an AWS v4 signature for a Amazon Selling Partner API (SP-API)

I have legacy amazon MWS integration written in classic asp. I need to upgrade to Amazon SP-API

I have managed to obtain the access token and the next step is to call Get Orders by passing in parameters createdAfter and MarketplaceIds to the API

The job is to Create a signed AWS API request and call GetOrders to return the JSON

Everything must be done in Classic ASP