public function build($method, $uri, $params = null)
	{
		$request = [
			'http_method' => $method,
			'scheme' => $this->schema,
			'uri' => $this->uri . $uri,
			'headers' => [
				'Host' => [$this->host],
				'User-Agent' => [$this->getUserAgent()],
			],
			'client' => [
				'connect_timeout' => 30,
				'timeout' => 60,
			],
			'version' => 1.1,
		];

		// Build query
		if (!empty($params)) {
			$request['query_string'] = http_build_query($params);
		}

		return $request;
	}