{"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": {"set": [{"prefix": {"addr": "1.1.1.0", "len": 24}}, {"prefix": {"addr": "2.2.2.0", "len": 24}}, {"prefix": {"addr": "3.3.3.0", "len": 24}}]}}}]}}]}