{
  "parameter_filters": [
    {
      "parameter": "conditions.milling_ball_diameter",
      "operator": "range",
      "minimum": 4,
      "maximum": 6
    },
    {
      "parameter": "conditions.milling_frequency",
      "operator": "range",
      "minimum": 20,
      "maximum": 40
    },
    {
      "parameter": "conditions.milling_medium",
      "operator": "equals",
      "values": [
        "zirconia"
      ]
    }
  ]
}