如何在复杂的集合对象中添加新文档

I have a collection:

我有一个收集:

{
    "_id": ObjectId("503b83dfad79cc8d26000004"),
    "uid": "9a8a2c5b9418cc1baadfa41255791414",
    "link": "https://stackoverflow.com/questions",
    "tasks": [
      {
        "query": "lorem lorem",
        "list": [
          {
            "timestamp": "159",
            "provider": "Lor Em"
          }
        ]
      }
    ]
}
{
    "_id": O