activity against member:

results: Array
(
[member_ref] =>
[contact_id] => 41813
[activity_id] =>
[activity_date] => 2022-06-10
[activity_type] => Conference registration
[activity_description] => 16th EASE Conference – in-person registration
[activity_cost] => 179
[renewal_date] => 2022-06-10
[payment_date] => 2022-06-10
[payment_reference] => WP26560435950
[invoice_date] =>
[invoice_reference] =>
)