results: Array
(
[member_ref] => 5363
[activity_id] =>
[activity_date] => 2020-01-01
[activity_type] => Subscription
[activity_description] => VRC group member subscription 2020
[activity_cost] => 0
[renewal_date] => 2019-12-11
[payment_date] => 2019-12-11
[payment_reference] => WP11278009042
[invoice_date] => 2019-12-11
[invoice_reference] => 5327
)