JSON validation in Google Script

function main() {
  let shema = {
    "$schema": "http://json-schema.org/draft-04/schema#",
    type: "object",
    properties: {
      folders: {
        type: "array",
        items: {
          type: "string",
          minLength: 1
        },
        minItems: 1,
        uniqueItems: true
      },
      actions: {
        type: "array",
        items: {
          type: "object",
          properties: {
            type: {
              type: "string",
              pattern: "^document|spreadsheet|presentation|image|video|script$"
            },
            name: {
              type: "string",
              minLength: 1
            },
            action: {
              oneOf: [
                {
                  type: "object",
                  properties: {
                    type: {
                      type: "string",
                      pattern: "^delete$"
                    }
                  },
                  additionalProperties: false,
                  required: ["type"]
                },
                {
                  type: "object",
                  properties: {
                    type: {
                      type: "string",
                      pattern: "^move$"
                    },
                    target: {
                      type: "string",
                      minLength: 1
                    }
                  },
                  additionalProperties: false,
                  required: ["type", "target"]
                },
              ]
            }
          },
          additionalProperties: false,
          required: ["name", "action"]
        },
        minItems: 1,
        uniqueItems: true
      },
    },
    additionalProperties: false,
    required: ["actions"]
  }

  let json = {
    folders: ["a"],
    actions: [
      {
        type: "document",
        name: "x",
        action: {
          type: "delete",
        }
      }
    ],
  }

  let data = {
    schema: shema,
    json: json
  }

  var options = {
    method: "post",
    contentType: "application/json",
    muteHttpExceptions: true,
    payload: JSON.stringify(data)
  };

  let responce = UrlFetchApp.fetch("https://assertible.com/json", options);
  console.log(`Responce code: ${responce.getResponseCode()}`);
  console.log(`Content: ${responce.getContentText()}`);
}