So the problem now is that this makes lots of individual calls to the Janrain API. It needs to fetch them in one big thwack.

You can do it like this:
```Ruby

uuid_string = uuids.map { |uuid| "uuid='#{uuid}'" }.join(' or ')

response = HTTParty.post(CAPTURE_URL + '/entity.find', {body:{
  filter: uuid_string,
  type_name: 'user',
  client_id: CAPTURE_OWNER_CLIENT_ID,
  client_secret: CAPTURE_OWNER_CLIENT_SECRET
}})

body = JSON.parse(response.body) 

users = body['results'].map { |user_hash| from_hash(user_hash) }
users_by_id = Hash[users.map {|user| [user.uuid, user]}]
```

(You might want to [read up on Hash::[]](http://www.ruby-doc.org/core-2.0.0/Hash.html#method-c-5B-5D) to see what that last line is doing.)