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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def process_subscription_data(post_data):
 """Process the subscription data according to out model"""

    subscription_data = post_data.pop("subscription", {})
    # As our database saves the auth and p256dh key in separate field,
    # we need to refactor it and insert the auth and p256dh keys in the same dictionary
    keys = subscription_data.pop("keys", {})
    subscription_data.update(keys)
    # Insert the browser name
    subscription_data["browser"] = post_data.pop("browser")
    return subscription_data