my $subscription = {
        'items[0][id]'                 => 'x',
        'items[0][price]'              => 'some price',
};

my $options = {
	'headers' => {
        'Authorization' => 'Bearer ' . $Site::Variables::stripe_secret,
	    'content-type'  => 'application/json',
    },
    'content' => encode_json($subscription),
};

my $response = $http->request('POST', "https://api.stripe.com/v1/subscriptions/$sub_id", $options);