You can refer this document, i hope this will help you out
Thanks for reply and sharing link.
This page does provide sample response. But does not provide meaning of each field in response.
E.g Response for orders/create, has global discount value. As well each line item has discount value.
How should I interpret these values ?
Is it like - sum of discount on each line item = overall discount ?
Or Overall discount also include order level discount ?
This is an accepted solution.
You can find them under https://help.shopify.com/en/api/reference, for example for the orders/create or orders/update you should expect to get a JSON as described here - https://help.shopify.com/en/api/reference/orders/order - Order properties section, unless you've provided the list of fields you want to limit the JSON to when creating the webhook. Have you had a chance to compare the two? Are you getting different payloads?