Paid subscription movements: for each period, how many PAYING subscriptions (full price or paid offer) entered the paid base and how many left it.

• Returns an array of {period, group_by, group_by_public_id, group_by_name, total_activations_count, total_churns_count, net_movement_count} rows.
• total_activations_count: subscriptions that entered the paid base (direct purchases, trial/intro/promo conversions, reactivations).
• total_churns_count: subscriptions that left it (voluntary churn, involuntary/billing-failure churn, refunds).
• net_movement_count: total_activations_count - total_churns_count.
• Unit: count of subscriptions. A flow: summable across periods.
• Always restricted to the paid segment (no segment parameter). This is the paid counterpart of subscription_activations.
• These movements do not reconcile exactly with subscription_evolution: a close is not the previous close plus net_movement_count, because the two follow different rules. Movements count only classified store events and apply the paid filter to each event. ENTERED_BILLING_RETRY and GRACE_PERIOD_TERMINATED count as involuntary churn on their date, and a switch from paid to free without DEACTIVATE counts no churn.
• For the exact base on a date, use subscription_evolution (its last row on the date_range end date, or periodicity=DAY), not a close minus movements.
• Recommended periodicity: MONTH.
• Single application only.

Required scope: analytics.dashboards:view