changing video source content via json request

Hello.
I’ve got osmc 16.1 on raps 3.
Now I’m using requests like
curl –data-binary ‘{ “jsonrpc”: “2.0”, “method”: “VideoLibrary.Scan”, “id”: “mybash”}’ -H ‘content-type: application/json;’ http://login:[email protected]:80/jsonrpc
to scan or clean library from scripts.
How can I change video source content (choose a scrapper, change content scanning options etc) using json requests ? Or may be some kind man tell me another way to do the same from linux ?

Thanks in advance.