follows_profiles_by_id_create
POST /follows/profiles/:userID — Follow a DCer
Follow a DCer. Idempotent — calling it twice with the same userID is safe (no-op the second time). Target must exist and be publicly visible (hidden + guest profiles are refused with 404). You cannot follow yourself.
When the cap of 150 is reached, returns 409 follow_limit_reached with a hint to unfollow someone first. The response includes the new profile mini-card and updated count so the caller can render the change without re-fetching.
This list also drives the /locator/digest favoritePeople and favoriteCities sections — surface trip + event activity from DCers and cities you care about without scrolling everywhere.
⚠️ WRITE operation: this mutates your DC account data.
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| userID | Yes | userID of the DCer to follow. Discover via `GET /profile-match` or `GET /chapters/:cityID` members lists. |