results: Array
(
[member_ref] => 5452
[activity_id] =>
[activity_date] => 2020-10-21
[activity_type] => Subscription
[activity_description] => 2021 subscription – part payment awaiting further payment
[activity_cost] => 46
[renewal_date] =>
[payment_date] => 2020-10-21
[payment_reference] => WP17214413916
[invoice_date] =>
[invoice_reference] =>
)