How to encode then decode a JSON in Swift to escape characters?

Question

How to encode and then decode to JSON, to escape meantime the special character?

I have now this code:

let o5: [String: Any] = ..
let o6 = try JSONSerialization.data(withJSONObject: o5, options: JSONSerialization.WritingOptions.prettyPrinted)
let decoder = JSONDecoder()
decoder.dateDecodingStrategy = .iso8601
decoder.keyDecodingStrategy = .useDefaultKeys
let o7 = try decoder.decode(Organization.self, from: o6)

I would do following text replacement: / -> \/, new line -> \n, " -> \".

Recently I have unfortunatelly unescaped special characters in my DB.