I am attempting to import historical order data via GraphQL, using mutations. According to my research, an order record is a model schema with id: 8787. I am just wondering if you have documentation about an order record, what each field is used for or what it will be used for in the future? For example, I know that module_field_14/order_1 is the customer ID, order_2 is the customer email, order_3 is the order status, order_9 is the order total etc. but what about the other fields? It would be great if you could provide some more information regarding this, thanks a lot! also what fields are required and which ones are optional?