results: Array
(
[member_ref] => 1111
[activity_id] =>
[activity_date] => 2020-10-10
[activity_type] =>
[activity_description] => A sample activity
[activity_cost] => 100
[renewal_date] =>
[payment_date] =>
[payment_reference] =>
[invoice_date] =>
[invoice_reference] =>
)