swift 3.0 How can I access `AnyHashable` types in `Any` in Swift 3?

This is how you access Dictionary of [AnyHashable : Any]

var dict : Dictionary = Dictionary<AnyHashable,Any>()
dict["name"] = "sandeep"
let myName : String = dict["name"] as? String ?? ""

In your case

let authorId = totalCount?["authorId"] as? String ?? ""