exclude checkin date

gistfile1.txt

{
  "name": "DPA 3 DAY VIEW EXCLUDING 3 DAY PURCHASE - EXC NO CHECKIN DATE",
  "description": "",
  "product_set_id": 261329514218675
  "inclusions": [
    {
      "retention_seconds": 259200,
      "rule": {
            "event": {
              "eq": "ViewContent"
            }
          }
    }
  ],
  "exclusions": [
    {
      "retention_seconds": 259200,
      "rule": {
        "and": [
          {
            "event": {
              "eq": "Purchase"
            }
          },
          {
            "checkin_date": {
              "neq": " "
            }
          }
        ]
      }
    }
  ]
}