formatting JSON long string with newline on VSCode

Question

I have a JSON file.

{
  "title": "My Title",
  "author": "Me",
  "customJSON": "{\n\"something1\": \"leftEye\",\n\"something2\": \"leftEye\",\n\"something3\": \"leftEye\",\n\"something4\": \"leftEye\",\n\"something5\": \"leftEye\",\n\"something6\": \"leftEye\",\n\"something7\": \"leftEye\",\n\"something8\": \"leftEye\"\n}"
}

As you see, customJSON value is string and it has very long length so vertical scroll activate.

Even though VSCode provides default JSON formatting but it doesn't format long string like customJSON.

If there are any extensions for my needs please suggest me :)

What I want to see on VSCode

{
  "title": "My Title",
  "author": "Me",
  "customJSON": "{
    \"something1\": \"leftEye\",
    \"something2\": \"leftEye\",
    \"something3\": \"leftEye\",
    \"something4\": \"leftEye\",
    \"something5\": \"leftEye\",
    \"something6\": \"leftEye\",
    \"something7\": \"leftEye\",
    \"something8\": \"leftEye\"
  }"
}