I'm submitting a form to a Lambda function deployed by serverless, here's the yml:

```
functions:
  hello:
    handler: handler.hello
    events:
      - http: POST hello

```

Now my hello function is: 

```
module.exports.hello = (event, context, callback) => {
  const response = {
    statusCode: 200,
    body: JSON.stringify({
      message: 'Go Se222rverless v1.0! Your function executed successfully!',
      input: event,
    }),
  };

  callback(null, response);
};

```

I can see on the output that the variables were passed, but they are stored in the event.body property as such:

```
 "body":"email=test%40test.com&password=test12345"

```

Now I can access this string, but I can't read individual variables from it, unless I do some regex transformation which, I believe, would not be the case in such a modern stack such as serverless/aws. 

What am I missing? How do I read the individual variables?