Summary
When we use "amplitude-js": "8.21.2" for web tracking
We use amplitude for user path tracking. We can find our registered new users through AWS's elasticsearch,
but we cannot find the corresponding user id in amplitude.

User Id:
b90189ce-0391-46f6-87ef-a23cd743728d
e52a51c5-3ccc-44c2-8991-2b12ff8d0ada