{
  "configurations": [
    {
      "$object": {"contentType": "application/vnd.celastrinajs.config+json;Captcha"},
      "action": {
        "$object": {"contentType": "application/vnd.celastrinajs.attribute+json;GoogleReCaptcha"},
        "version": "v3",
        "secret" : "some_secret_value",
        "parameter": {"$object": {"contentType": "application/vnd.celastrinajs.attribute+json;HTTPParameter"},
                      "parameter":  "header"},
        "name": "x-celastrinajs-captcha-token"
      }
    }
  ]
}