bubble/scripts/proxy.json

[
  {
    "comment": "declare default parameters for proxy script part",
    "include": "_defaults",
    "params": {
      "URL": "<<<URL>>>",
      "OUTFILE": "<<<OUTFILE>>>"
    }
  },

  {
    "comment": "try proxy to <<<URL>>>",
    "request": { "uri": "p/<<<URL>>>" },
    "response": { "raw": <<RAW>> },
    "after": "save-download-to-file <<OUTFILE>>"
  }
]