protected function formatToExpectedJson($key, $value)
    {
        $expected = json_encode([$key => $value]);

        if (Str::startsWith($expected, '{')) {
            $expected = substr($expected, 1);
        }

        if (Str::endsWith($expected, '}')) {
            $expected = substr($expected, 0, -1);
        }

        return trim($expected);
    }