The id of the primary blog associated with the user who likes, unlikes, or reblogs a post by another user.
The id of the blog that receives the like or the reblog is available for filtering in tumblr.dest.blogid.
If user A likes or reblogs content from user B, details of A are held in the source targets and details of B are held in the destination targets.
- Filter for selected source blog ids:
tumblr.source.blogid in "987654321, 123456789"
Target service: Tumblr
Always exists: No