{
    "rules": [
        {
            "type": "m.room",
            "entity": "!id:example.com",
            "tags": [ "csam" ]
        },
        {
            "type": "m.user",
            "entity": "@user-_:example.com",
            "tag": "high_risk"
        }
    ],
    "signature": "-----BEGIN PUBLIC KEY SIGNATURE-----..."
}