Event collection in Swift

event.swift

let eventClient = EventClient(accessKey: accessKey, baseURL: "http://localhost:7070")
let event = Event(
  event: "view",
  entityType: "user",
  entityID: "16398de4-cd17-11e4-afdc-1681e6b88ec1",
  targetEntityType: "item",
  targetEntityID: "2274f58a-cd17-11e4-afdc-1681e6b88ec1"
)

eventClient.createEvent(event) { (request, response, JSON, error) in
  ...
}