{

  "query": {

    "bool": {

      "filter": [

        {

          "range": {

            "time": {

              "gte": "now-30d/d"

            }

          }

        },

        {

          "script": {

            "script": {

              "source": "doc.time.date.getHourOfDay() <=4 && doc.time.date.getHourOfDay() >=2",

              "lang": "painless"

            }

          }

        }

      ]

    }

  },

  "aggs": {

    "user_ids": {

      "terms": {

        "field": "user_id"

      }

    }

  },

  "size": 0

}