{
  "$schema": "https://www.atsc-schemas.org/atsc3.0/a344/20250226/org.atsc.query.signaling-request.json",
    "jsonrpc": "2.0",
    "method": "org.atsc.query.signaling",
    "params": {
        "nameList": [1, "MPD"]
    },
    "id": 913
}