curl --request GET \
  --url https://sandbox.sturdytechnologies.com/v3/users/{user_id}

{
  "data": {
    "email": "user@example.com",
    "firstname": "John",
    "lastname": "Doe",
    "telephone": "+1234567890",
    "user_id": "12345"
  },
  "message": "<string>",
  "success": true
}