{
    "context": {
        "client": {
            "hl": "en",
            "gl": "US",
            "clientName": %clientName%,
            "clientVersion": "%clientVersion%",
            "clientScreen": "WATCH"
        },
        "thirdParty": {
            "embedUrl": "https://www.youtube.com/"
        }
    },
    "videoId": "%videoId%",
    "playbackContext": {
        "contentPlaybackContext": {
            "autonavState": "STATE_ON",
            "html5Preference": "HTML5_PREF_WANTS",
            "signatureTimestamp": 19075,
            "lactMilliseconds": "-1"
        }
    },
    "racyCheckOk": true,
    "contentCheckOk": true
}