{
    "os": [
        "Windows NT 10; WOW64", 
        "X11; Linux x86_64"
    ], 
    "ua": "Mozilla/5.0 ({os}; rv:{version}) Gecko/20100101 Firefox/{version}", 
    "versions": [
        "59.0.2", 
        "59.0.1", 
        "59.0", 
        "58.0.2", 
        "58.0.1", 
        "58.0"
    ]
}