I'd edit my other reply to this comment but can't anymore.

Here are the columns from the CSV file I've seen being shared around on forums, including the "internal metadata". This mostly boils down to full name on file, email, Stripe customer ID, activity metrics, usernames, and phone numbers. Everything else is largely irrelevant.

id,name,email,email_confirmed,email_confirmation_token,stripe_platform_customer_id,is_global_admin,is_ghost,created_at,anonymous_id,email_bounce_count,photo_url,publisher_agreement_accepted_at,bio,updated_at,profile_set_up_at,tos_accepted_at,email_digest_at,has_passed_captcha,import_confirmation_required,post_notification_preference,reader_installed_at,activity_items_viewed_at,dismissed_ios_app_promo_at,email_notifications_last_resumed_at,previous_name,release_group,handle,phone,bank_payment_failures,is_globally_banned,session_version