How to create a signature (md-5)

Sort the request parameters alphabetically:

If the element contains an array (e.g., segments) or a list of parameters (e.g., passengers), the content of this element is sorted separately.

This content is not sorted with parameters of the upper level. 

Assemble a string containing only the values ​​of the parameters (ranking is the same as in step 1): The values ​​are separated by a colon.

Add to the beginning of this string value of your affiliate API token:

Use the resulting string to calculate the md-5 signature. The result is the signature of our request.
Attention! Signature is case-sensitive.