Retrieve POST data in the order they were sent in in Django

Is there a way to get data POSTed to a Django view in the order in which it appeared in the HTTP header?

The reason I need this is for PayPal's Instant Payment Notification - you hav开发者_如何学Ce to acknowledge the notification by sending the data back in exactly the same order to ensure the integrity of the data. I can't figure this one out!

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Maybe HttpRequest.raw_post_data can be your friend? It is available since Django 1.3.