Follow content
documentedFollow a user or content item.
GET {site_url}/_api/social.following/followSocialno implementation yet0 runsInput
site_url*
Site URL (host and site path, e.g. contoso.sharepoint.com/sites/MySite)
ActorType*
ActorType (0=User, 1=Document, 2=Site, 3=Tag)
AccountName*
AccountName (domain\\user)
Calls Microsoft SharePoint as you (your API key is your account); keychains.dev holds the credentials.