{
    "title": "Payload schema of Courseware\\BlockType\\Download",
    "type": "object",
    "properties": {
        "title": {
            "type": "string"
        },
        "info": {
            "type": "string"
        },
        "success": {
            "type": "string"
        },
        "grade": {
            "type": ["string", "boolean"]
        },
        "file_id": {
            "type": "string"
        }
    },
    "required": [
        "file_id"
    ],
    "additionalProperties": false
}