I can manually edit the "Component Watchers" but would like to do this via the API.
Documentation for the REST API does not appear to have an entry for componentWatchers.
https://community.atlassian.com/t5/Jira-questions/scriptrunner-post-function-to-add-watchers-based-on-component/qaq-p/208822 had at least a partial answer:
It looks like there is no public Java API, but there is public REST API. I can see, there are two endpoints which accept "project key" as a parameter
Response of both endpoints contains this "section" of data$ curl --user 'user:passwd' --noproxy "*" "https://jira.example.com/rest/componentwatchers/1.0/groups/VLAB"
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