How to correctly pass filter parameters when requesting the search.tagContents method in the Odnoklassniki API?

Question

PHP

I'm trying to request content marked with a specific tag from 2017-09-25, I execute the following request:

as a result, I get data for the previous numbers:

I tried to filter the result by types, but similarly received data of all types, not those specified in the filter.
Perhaps I somehow incorrectly pass the filter parameters in the request:

return (new Client)->request(
      'get',
      sprintf(
        'https://api.ok.ru/fb.do?%s',
        http_build_query([
          'anchor' => $anchor,
          'application_key' => $this->options['client_public'],
          'count' => 2,
          'filter' => [
            'since' => !is_null($date)? $date->format('Y-m-d H:i:s') : null,
          ],
          'format' => 'json',
          'method' => 'search.tagContents',
          'query' => $this->filter['tag'],
          'sig' => $sig,
          'access_token' => $this->options['access_token'],
        ])
      )
    );

The API does not complain about the request format, but simply does not take into account the filtering parameters.

Answer 1

The filter should have the following format:
{"since": "2017-08-26 00:00:00", "until": "2017-09-26 00:00:00", "types": ["GROUP_TOPIC" ]}