CourseFolder

{
    "id": "FID001",
    "type": "CourseFolder",
    "attributes": {
        "name": "string",
        "imageUrl": "string"
    },
    "relationships": {
        "course": {
            "data": {
                "id": "FID001",
                "type": "Course"
            }
        },
        "items": {
            "data": [
                {
                    "id": "FID001",
                    "type": "CourseItemAudio"
                }
            ]
        }
    }
}