square.onCustomerCustomAttributeVisibleUpdated subscribes to customer.custom_attribute.visible.updated for the selected seller. It requires CUSTOMERS_READ.
Example
automations/square-on-customer-custom-attribute-visible-updated.automation.ts
Event
A custom attribute that’s visible to your application was created or updated for a customer profile. This event replaces the deprecated customer.custom_attribute.public.updated event. The signal resolves to the officialSquare.CustomerCustomAttributeVisibleUpdatedEvent payload with type narrowed to customer.custom_attribute.visible.updated.