[
    {
        "GroupId": 1,
        "PrevChapterIds": [],
        "UnlockLv": 0,
        "LockDesc": "Unlocks by completing Main Story 2-4.",
        "Bg": "Assets/Product/Texture/Image/UiCourse/UiCourseC.png",
        "ChapterIds": [
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            2
        ]
    },
    {
        "GroupId": 2,
        "PrevChapterIds": [],
        "UnlockLv": 40,
        "LockDesc": "Unlocks at Commandant Lv.40.",
        "Bg": "Assets/Product/Texture/Image/UiCourse/UiCourseB.png",
        "ChapterIds": [
            4,
            5
        ]
    },
    {
        "GroupId": 3,
        "PrevChapterIds": [],
        "UnlockLv": 60,
        "LockDesc": "Unlocks at Commandant Lv.60.",
        "Bg": "Assets/Product/Texture/Image/UiCourse/UiCourseA.png",
        "ChapterIds": [
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        ]
    }
]