results: Array
(
[member_ref] => 5513
[activity_id] =>
[activity_date] => 2020-06-02
[activity_type] => Subscription
[activity_description] => Elsevier group member subscription, part year 2020
[activity_cost] => 0
[renewal_date] => 2020-05-27
[payment_date] => 2020-07-30
[payment_reference] => Santander BT
[invoice_date] => 2020-05-27
[invoice_reference] => 5586
)