Why don't I see any directory/brands/contact/contactlist activity logs in api ?

Trying to access the activity logs for following activity types, but don't see any activity logs in response:
directory, directory_setting, contact, contact_list, dashboard_usage, brands
I am trying to get these activity logs with a brand administrator account.
API request:
curl --location --request GET 'https://mydomain.ca1.qualtrics.com/API/v3/logs?activityType=brands' \\
--header 'Authorization: bearer '
Response:
{
"result": {
"nextPage": null,
"elements": []
},
"meta": {
"requestId": "7a5c9a83-15ab-45fa-87f0-bd06bc787910",
"httpStatus": "200 - OK"
}
}