Storage format with special characters in Create page API throws error 400

Issue Summary

Storage format with special characters in Create page API throws an error

{
"errors":[{"status":400,"code":"INVALID_MESSAGE","title":"Invalid message","detail":null}]
}

The storage format taken from the page UI can't be used to create a page via api.

Steps to Reproduce

• Create a new Confluence page
• Create a (new) Jira issue macro 
• Get the storage format from the page UI: click on  "..." >> Advanced details >> Storage format
• With the storage format create a new page via Create page v2 API

Expected Results

 
The new page is created correctly via the API

Actual Results

The following error is thrown in Postman Web:

{"errors": [{"status": 400,  "code": "INVALID_MESSAGE", "title": "Invalid message","detail": null}]}

Workaround

The above API has to be modified by replacing " with "\ and  \& with \&&  and then the API will work

OR

Get the storage format with the api: https://<INSTANCE_NAME>.atlassian.net/wiki/api/v2/pages/<page_id>?body-format=storage