How to execute an Implicit Grant flow from a SPA Client application.
https://auth0.com/docs/api-auth/tutorials/implicit-grant#optional-customize-the-tokens
* Introducing OIDC Conformant Authentication * client-side apps * Grant Type property * Register your API * authorization URL * Settings * standard OIDC scopes * conform to a namespaced format * Namespacing Custom Claims * Client's Settings * Client's Settings * OAuth 2.0 Specification * click here to learn more * used to prevent token replay attacks * Sign In * Verify Access Tokens * Rules * SSO * Silent Authentication