Hi,
I believe you could use the authentication hash generator in the Site manager -> Settings -> Integration -> REST, as mentioned in
DevGuide article on REST settings:
Generate authentication hash for URL
Click the link to open a dialog where you can generate an authentication hash for a specified URL. This hash can be used instead of authentication afterwards to access specified data.The URL can then be used in all of the supported requests.
Should you need any additional details, please feel free to ask.
Regards,
Zdenek