About the Auth-Token header

The “Auth-Token” is a base64 encoded text string. The string should be created as follows: ACCESS_KEY; UNIXTIMESTAMP;UNIQ-TOKEN

Name	Description
ACCESS_KEY	Value obtained from the Access Keys section.
UNIXTIMESTAMP	Should be created at the same time as the request, note that it is in UTC time and in SECONDS.
UNIQ-TOKEN	Hexadecimal representation of a sha256 hash generated from the string "secret-key" + "timestamp". The "secret-key" will be obtained from the Access Keys section.

The token will have a validity of 30 seconds, after this time the requests will be rejected with a 401 error (Unauthorized).