vars {
  base_url: http://localhost:8765
  ebookid: 02a535a4-19f8-43fa-b81b-89a226d19dd9
  fakebookid: 123e4567-e89b-12d3-a456-426614174000
  user_id: c51118f0-31fc-4c32-827d-517d6599bf21
}
vars:secret [
  token
]