json expert needed

Using Shopify, verify and validate a JWT Token via public key. Authentication — Each outbound link from an affiliate will be sent with a JWT (JSON Web Token) as a GET parameter. EG: [login to view URL]{TOKEN} The proposed solution is to have our site read and validate the token client side on a specific page through shopify. Tokens will be signed with RSA256, the public key will be available via a URL on the affiliate's domain. The public key must be used to verify the token signature. (URL has been supplied already). Reporting — Send reporting data via WebHooks, with the UUID from the token passed back to track activity to the outbound link.