post https://apptracking.retailrocket.net/2.0/setProfile/
Description
This method should be used in order to transfer information about user to the Retail Rocket system, for example, an email address, that does not have yet an unique identifier in the system of online store.
It can be used on all subscription forms, for example in the page footer, or on pop-up windows.
Once the user has authorized on the website, and his unique identifier is known, you must call method setCustomer with the specified link - the user will be attached to the main profile.
Note: This method is not suitable for unsubscribing previously subscribed users.