public function getStringForResponseSignature()
	{
		return $this->headers[SONIC_HEADER__TARGET_API]
				. $this->headers[SONIC_HEADER__DATE]
				. $this->headers[SONIC_HEADER__PLATFORM_GID]
				. $this->headers[SONIC_HEADER__SOURCE_GID]
				. $this->headers[SONIC_HEADER__RANDOM]
				. $this->body;
	}