Implement redux.

pages/api/auth/verify.js

@@ -0,0 +1,11 @@
+import { useAuth } from 'lib/middleware';
+
+export default async (req, res) => {
+  await useAuth(req, res);
+
+  if (req.auth) {
+    return res.status(200).json(req.auth);
+  }
+
+  return res.status(401).end();
+};