We are building an e-commerce application and want our users to be able to import their products from Facebook Marketplace. Also, we want the data to be synced via some sort of async communication (i. e. webhooks), so when data about product changes - we know about it as well. So far, I understand that we need a Facebook App to be registered, so that users could install it and grant needed permissions to us. Is it possible? If so, then what is the appropriate approach to this? Thanks in advance!