{
  "tasks": [
    {
      "task_id": "init_course01",
      "action": "UPDATE_MANIFEST",
      "payload": {
        "course_id": "course01",
        "assets": [
          {
            "url": "http://example.com/course01/chapter01/001.mp3",
            "md5": "abc123",
            "target_path": "/data/courses/course01/chapter01/resources/001.mp3"
          },
          {
            "url": "http://example.com/course01/chapter01/002.mp3",
            "md5": "def456",
            "target_path": "/data/courses/course01/chapter01/resources/002.mp3"
          }
        ]
      }
    },
    {
      "task_id": "init_course02",
      "action": "UPDATE_MANIFEST",
      "payload": {
        "course_id": "course02",
        "assets": [
          {
            "url": "http://example.com/course02/chapter01/001.mp3",
            "md5": "ghi789",
            "target_path": "/data/courses/course02/chapter01/resources/001.mp3"
          }
        ]
      }
    }
  ]
}