public static function sendJSONBody($method, $postBody, $content_type,
            $rest_url, $key_key, $secret, &$debug_log=false, $signature=false)
    {
        if ( is_array($debug_log) ) $debug_log[] = array('Sending '.strlen($postBody).' bytes to rest_url='.$rest_url);

        $more_headers = false;
        $response = self::sendOAuthBody($method, $rest_url, $key_key,
            $secret, $content_type, $postBody);

        if ( is_array($debug_log) )  $debug_log[] = array('Caliper JSON Response',$response);

        global $LastOAuthBodyBaseString;
        $lbs = $LastOAuthBodyBaseString;
        if ( is_array($debug_log) )  $debug_log[] = array('Our base string',$lbs);

        return true;
    }