Here's a sample clause that exponea uses:
Website personalization. By enabling cookies in your browser, you acknowledge that Exponea may process the following data for the purposes of website’s personalization, browsing experience optimalisation, analyzing your website’s behavior and delivering relevant advertisements to you: (IP) address, name, surname, gender, email address, login information, time zone setting, operating system and platform, information about visits including the URL, the search terms, information about what you viewed or searched on our website, page response times, download errors, length of visits to certain pages, page interaction information, (such as scrolling, clicks, and mouse-overs) and the methods used to browse away from the page, activities of users, browsing web pages. The legal ground for processing cookies is our legitimate interest according to the Article 6 (1) f) GDPR. You have the right to object to data processing for the purpose of website personalisation (for more information please see Section 9).