I want remove a item inside a dictionary value but i don't know how i many ways but I couldn't

{
  "_id": {
    "$oid": "63a7cd40c93763cb93fb27b4"
  },
  "-1001166788687": {
    "84653426": "<a href=tg://user?id=84653426>Returning</a>"
  },
  "group_name": "T"
}

I want remove this