https://shoppingcontent.googleapis.com/content/v2.1/[MERCHANTID]/products?key=[YOUR_API_KEY] HTTP/1.1

Authorization: Bearer [YOUR_ACCESS_TOKEN]
Accept: application/json

https://shoppingcontent.googleapis.com/content/v2.1/[MERCHANTID]/products?key=[YOUR_API_KEY] HTTP/1.1

Authorization: Bearer [YOUR_ACCESS_TOKEN]
Accept: application/json