Overwrite JSON in TFS releases

I have a JSON file that I'd like to "overwrite" with data from another JSON, but keep anything that isn't changed. Is there a way to do this out of the box for Azure DevOps pipeline releases? There is a Config transform plugin thingy for it named magic-chunks, but its syntax is really odd and doesn't work properly if I need to overwrite an array.

Destination (JSON that should be "overwritten")

{
    "AppSettings": {
      "AllowSwaggerRequests": false,
      "Secret": "SomeStuff"
    },
    "Logging": {
      "LogLevel": {
        "Default": "Debug"
      }
    }
}

JSON that should be used and added on top of the previous one.

{
    "AppSettings": {
      "AllowSwaggerRequests": true,
      "Secret": "Overwritten"
    },
    "TestProperty": "Hello World"
}

Expected result:

{
    "AppSettings": {
        "AllowSwaggerRequests": true,
        "Secret": "Overwritten"
    },
    "Logging": {
        "LogLevel": {
            "Default": "Debug"
        }
    },
    "TestProperty": "Hello World"
}

Solution

The solution suggested by LoLance back in the day did not help sadly and I had given up on it altogether. Funnily enough, some time later I had managed to find an Azure DevOps extension / plugin called "File Patch Build and Release Tasks" (I am unable to find the link to it right now for some reason) which I used and which worked really. Its syntax was a bit unusual, but it did the job.