Retrieve a User

curl --request GET \
  --url https://{defaultHost}/v5/app/users/{id} \
  --header 'Authorization: Bearer <token>'

{
  "id": "<string>",
  "name": "<string>",
  "username": "<string>",
  "email": "<string>",
  "profile_pic_url": "<string>",
  "created_at": 123,
  "profile_pic_url_32": "<string>",
  "profile_pic_url_64": "<string>",
  "profile_pic_url_128": "<string>"
}