Get a user by ID

curl --request GET \
  --url https://{tenant_id}.hanko.io/users/{id}

{
  "id": "c339547d-e17d-4ba7-8a1d-b3d5a4d17c1c",
  "email": "jsmith@example.com",
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z",
  "username": "<string>",
  "webauthn_credentials": [
    {
      "id": "Meprtysj5ZZrTlg0qiLbsZ168OtQMeGVAikVy2n1hvvG..."
    }
  ]
}