{
  "nftables": [
    {
      "metainfo": {
        "version": "VERSION",
        "release_name": "RELEASE_NAME",
        "json_schema_version": 1
      }
    },
    {
      "table": {
        "family": "ip",
        "name": "x",
        "handle": 0
      }
    },
    {
      "chain": {
        "family": "ip",
        "table": "x",
        "name": "y",
        "handle": 0
      }
    },
    {
      "rule": {
        "family": "ip",
        "table": "x",
        "chain": "y",
        "handle": 0,
        "expr": [
          {
            "match": {
              "op": "in",
              "left": {
                "ct": {
                  "key": "state"
                }
              },
              "right": "invalid"
            }
          },
          {
            "log": {
              "prefix": "invalid state match, logging:"
            }
          }
        ]
      }
    }
  ]
}