Playground https://mongoplayground.net/p/tIMLOtWTnno

DATA:

[

  {
    "_id": "1",
    "data": {                     // How to remove this "data" Field
      "colour": "Blue",
      "size": "12",
    }
  },
  {
    "_id": "2",
    "data": {                     // How to remove this "data" Field
      "colour": "Silver",
      "size": "20",
    }
  }

]

I want to remove the data field.

Expected Output:

[
  {
    "_id": "1",
    "colour": "Blue",
    "size": "12",
    
  },
  {
    "_id": "2",
    "colour": "Silver",
    "size": "20",
    
  }
]

Tried it like this:

db.collection.aggregate({
  $project: {
    _id: 1,
    data: {
      $objectToArray: "$data"
    }
  },
  
},
{
  $unwind: "$data"
},
{
  $project: {
    "$data.k": "$data.v"
  }
})

How to do this ?