interval'monthly' required
source'app_upgrade' | 'post_import' | 'signup'
returnTo'/connect' | '/connect?view=plaid&returnTo=/overview' | '/assistant' | '/money' | '/settings' | '/settings#billing' | '/settings#privacy-data' | '/settings/imessage' | '/recurring/bills' | '/checklist' | '/todo' | '/taxes' | '/taxes/planning'
surface'chat_subscription_paywall' | 'ai_usage_banner' | 'connection_gate' | 'money_gate' | 'export_gate' | 'settings_billing' | 'connect_bank_gate' | 'connect_plan_notice' | 'imessage_gate' | 'overview_core_rail' | 'household_invite_gate' | 'recurring_gate' | 'checklist_gate' | 'todo_gate'