Retrieving User Metadata with claims in Auth0 integration with SharePoint

When I tried to retrieve user_metadata as part of login, it is not returning. I tried adding user_metadata as part of request claims, still no luck. Any thoughts how to retreive use_metadata?

“User Name|”,
"User Meta|",
“Email Verified|”,
“Client ID|”,

where can I found list of valid claim namespaces with auth0?