I think maybe need \s* in (?<STRING>...）also as some JSON file have space outside of ""

(?<STRING>
  \s*
  (
    "
    (?:
      [^\\"]+
    |
      \\ ["\\/bfnrt]
    )*
    "
  )\s*
   (?{ [$^R, $^N] })
)
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