Question about 'filter' parameter in deals/v2 endpoint

[stplat]

Hello,

I'm trying to use the 'filter' parameter in the deals/v2 endpoint but keep getting a 400 error with the message "Invalid 'filter' value". The documentation does not specify what values are valid for this parameter. Could you please provide some examples or clarify the correct usage of the 'filter' parameter?

Thank you!

$response = $this->client->request('GET', 'deals/v2', [
    'query' => [
        'key' => $this->apiKey,
        'shops' => implode(',', $shops),
        'limit' => $limit,
        'filter' => 'type:game'
    ]
]);

[tfedor]

Filter is the same value as you can see in on the site, in URL. It's basically compressed JSON, but I don't currently have a public JSON schema for filters published.