# get contribution page
    resp = requests.get(
        url,
        params=dict(
            entity='ContributionPage',
            action='getsingle',
            api_key='xxxxxxxxxxxxxxxx',
            key='xxxxxxxxxxxxxxx',
            json={"id":1}
        )
    )
    print(resp.text)

{"error_code":"unauthorized","entity":"ContributionPage","action":"getsingle","is_error":1,"error_message":"API permission check failed for ContributionPage/getsingle call; insufficient permission: require administer CiviCRM"}