curl --request GET \
  --url https://api.neynar.com/v2/farcaster/user/best_friends/ \
  --header 'x-api-key: <api-key>'

{
  "users": [
    {
      "fid": 123,
      "mutual_affinity_score": 123,
      "username": "<string>"
    }
  ],
  "next": {
    "cursor": "<string>"
  }
}