How to manage authentification on API call
All your connections should respect the Basic access authentication protocol, which must be used via HTTPS, except in development mode. In order to make an API call with this method, you must add an HTTP header:
Authorization: Basic base64(public_id:private_api_key)
# For the keys 'public_id' and 'private_key'
Authorization: Basic cHVibGljX2lkOnByaXZhdGVfYXBpX2tleQ==
All your requests should have at least a "group_id" key with the company id you