{
  "$ref": "core/state_event.json",
  "type": "m.room.policy",
  "state_key": "",
  "content": {
    "via": "policy.example.org",
    "public_keys": {
      "ed25519": "6yhHGKhCiXTSEN2ksjV7kX_N6rBQZ3Xb-M7LlC6NS-s"
    }
  }
}