Base 64 Key Encoding and Decoding in Swift

Base64Encoding.swift

let dates = ["key_1":Date()]
let encoder = JSONEncoder()
encoder.dataEncodingStrategy = .base64
encoder.outputFormatting = [.sortedKeys, .prettyPrinted]
let encoded = try? encoder.encode(object)
print(String(data: encoded!, encoding: .utf8)!)

//output
{
   "key_1" : 574821298.18860102
}