{
  "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": "==",
              "left": {
                "payload": {
                  "protocol": "ip",
                  "field": "saddr"
                }
              },
              "right": "1.1.1.1"
            }
          }
        ]
      }
    },
    {
      "rule": {
        "family": "ip",
        "table": "x",
        "chain": "y",
        "handle": 0,
        "expr": [
          {
            "mangle": {
              "key": {
                "meta": {
                  "key": "mark"
                }
              },
              "value": {
                "map": {
                  "key": {
                    "payload": {
                      "protocol": "ip",
                      "field": "saddr"
                    }
                  },
                  "data": {
                    "set": [
                      [
                        "1.1.1.1",
                        2
                      ]
                    ]
                  }
                }
              }
            }
          }
        ]
      }
    }
  ]
}