As per the latest update, On October 30, 2024, a number of the unique metrics will be deprecated from the Ads Insights API for all API versions. I see After the update, the API's unique_actions and cost_per_unique_action_type fields will return only the following action_type breakdowns:

link_click onsite_conversion_messaging_first_reply onsite_conversion_total_messaging_connection outbound_click

I want to know the equivalent alternative option for the ACTION_TYPE = 'onsite_conversion.purchase', as this action_type will be deprecated from Oct 30th, 2024. Under what action_type breakdown it will fall into from the above mentioned 4 available types?