How can you sort by only adding new line at the bottom

[vgolea]

From this:

{
  "YouTube channel ID": "YouTube channel ID",
  "YouTube link": "YouTube link",
  "ZIP Code": "ZIP Code",
  "ZIP Code is required": "ZIP Code is required"
}

To this:

{
  "YouTube channel ID": "YouTube channel ID",
  "ZIP Code": "ZIP Code",
  "ZIP Code is required": "ZIP Code is required",

  "YouTube link": "YouTube link",  <- New key
}