The API is designed to return the properties that you specify. You can experiment with the query on this page: Accounts Dashboard | HubSpot. From the Endpoints selector menu, choose READ. That will scroll down to that part of the page. You can look at the “parameters” section of the notes for “properties”. In that section play with the “Add test Value” tool. Notice that the example request gets modified to reflect the additions that you’ve made. The tool generates code for cURL, Python, PHP, etc, so select the code type that you want and you’ll get a working example.