How to return column entries of a DynamoDB table as a list?

Question

I created a lambda function and connected it to the AWS API Gateway to get my DynamoDB table data in JSON format for the front end, I am trying to get my column entries from my DynamoDB table as a List in JSON format but what I end up getting is a complete String of all the entries in my table which has practically zero usage for the front end (Flutter).

Here's my lambda function

const AWS = require("aws-sdk");
const documentClient = new AWS.DynamoDB.DocumentClient();

exports.handler = async event => {
  const params = {
    TableName: "//tableName" 
  };
  try {
    // Utilising the scan method to get all items in the table
    const data = await documentClient.scan(params).promise();
    const response = {
      statusCode: 200,
      body: JSON.stringify(data.Items)
    };
    return response;
  } catch (e) {
    return {
      statusCode: 500
    };
  }
};

My API's decoded JSON Body

{statusCode: 200, body: [{"product":"clear","__typename":"ProductModel","size":"small","_lastChangedAt":1625829002606,"_version":1,"company":"add","updatedAt":"2021-07-09T11:10:02.578Z","category":"Pot","createdAt":"2021-07-09T11:10:02.578Z","price":"69","description":"this doesn't even make sense","id":"f4acb29c-f8f3-4765-abf6-aef0002a837c"},{"product":"product","__typename":"ProductModel","size":"1","_lastChangedAt":1625988107746,"_version":1,"company":"company","updatedAt":"2021-07-11T07:21:47.704Z","category":"Climbers","createdAt":"2021-07-11T07:21:47.704Z","price":"221","description":"description","id":"0a51d3c3-4df3-4549-abaa-f8b88e8ac407"}]
}

I think there's a problem in my lambda function as the body part in it does not return a list but I can't get it working. Any help will be appreciated