jwt profile and fixes

example/server/internal/user.go

@@ -1,6 +1,10 @@
 package internal
 
-import "golang.org/x/text/language"
+import (
+	"crypto/rsa"
+
+	"golang.org/x/text/language"
+)
 
 type User struct {
 	id                string
@@ -14,3 +18,7 @@ type User struct {
 	phoneVerified     bool
 	preferredLanguage language.Tag
 }
+
+type Service struct {
+	keys map[string]*rsa.PublicKey
+}