How can i get "Elasticsearch Filter Plugin" result in json list in C#

I cannot think off the top of my head how to get that, but this would give you an array of arrays.

    ruby { code => "
        i = event.get('find_id')
        t = event.get('find_@timestamp')
        a = []
        i.each_index { |k|
            n = [ i[k], t[k] ]
            a << n
        }
        event.set('arrayOfArrays', a)
        "
    }