API doc says that the "Merge Contacts" endpoint should return a 200 with a response body of "SUCCESS".
Instead, I'm seeing a 200 with an empty response body. The contact I'm attempting to merge is unmerged.
Is this a bug in the API, the docs, both, or user error (aka, me)? Looking forward to any clarifications! I've triplechecked the VIDs are correct - but I could be wrong. The VID is in the URL as circled, I believe: