Adding root node to json structure

Question

I have below json structure. I need to add extra tag element documents as a list to entire my json structure. Please advise how can I achieve this.

{
  "issuer": {
    "address": {
      "branchID": " ",
      "country": " ",
      "governate": " "
    }
  }
}

Expecting below Output:

{
  "documents": [
    {
      "issuer": {
        "address": {
          "branchID": " ",
          "country": " ",
          "governate": " "
        }
      }
    }
  ]
}