First create a JSON Structure having your content:
Make sure your string is a valid JSON. In your copy several double quotes are missing, for instance "code";", has to be "code":"" .
Then create an export mapping, having schema source 'JSON Structure' and select your JSON as source.
Then, to get the database structure, click button 'Map automatically', or if you already have the entities present in your domain model, drag&drop them.
As a result you can now create a microflow that gathers the Root element. Call the REST using your export mapping directly in tab 'Request' after you have choosen 'Export mapping for the entire request'
Another option, giving you more control over the exportmapping, is to first create the export mapping, and use the result in tab request by selecting 'Custom request template':
and after this, how to input value of filterTypeItems?
it should be string one by one or just like this "3","4","5" or should using loop ?