Codable with CodingKeys.swift

// MARK: - Protocols

protocol User {
    var name: String { get }
    var email: String { get }
    var address: String { get }
    var line1: String? { get }
    var line2: String? { get }
}

// MARK: - Models

struct MyUser: Codable, User {
    var line2: String?
    var line1: String?
    var address: String
    var email: String
    var vat_number: String?
    var name: String
    
    enum CodingKeys: String, CodingKey {
        case line2 = "line_two"
        case line1
        case address
        case email
        case vat_number
        case name = "title"
    }
}

// MARK: - User

let userJSON = """
{
"title": "jean",
"address": "indirizzo",
"email": "[email protected]",
"status": "single",
"line_two": "reg. Brognalle",
"status": "married"
}
"""

do {
    let result = try JSONDecoder().decode(MyUser.self, from: userJSON.data(using: .utf8)!)
    dump(result)
} catch {
    dump(error)
}