This is a workaround to parse an generic subelement of a json object. It just parses anything it finds. Currently supports Dictionary, Array, String, Int, Double, Bool.

AnyJSON.swift

/// This is a workaround to parse an generic subelement of a json object. It just parses anything it finds. Currently supports Dictionary, Array, String, Int, Double, Bool.struct AnyJSON: Decodable {
    enum Error: Swift.Error {
        case noContainter
        case noSingleValue
    }
    struct CodingKeys: CodingKey {
        var stringValue: String
        init?(stringValue: String) {
            self.stringValue = stringValue
        }
        var intValue: Int? { return nil }
        init?(intValue: Int) { return nil }
    }
    
    let object: Any
    
    func data() throws -> Data {
        return try JSONSerialization.data(withJSONObject: self.object, options: [])
    }
    
    public init(from decoder: Decoder) throws {
        if let container = try? decoder.container(keyedBy: CodingKeys.self) {
             self.object = try Dictionary(container.allKeys.map({
                ($0.stringValue, try container.decode(AnyJSON.self, forKey: $0).object)
             }), uniquingKeysWith: { $1 })
           
        } else if var container = try? decoder.unkeyedContainer() {
            var array = [Any]()
            while !container.isAtEnd {
                array.append(try container.decode(AnyJSON.self).object)
            }
            self.object = array
        } else if let container = try? decoder.singleValueContainer() {
            if let string = try? container.decode(String.self) {
                self.object = string
            } else if let int = try? container.decode(Int.self) {
                self.object = int
            } else if let double = try? container.decode(Double.self) {
                self.object = double
            } else if let bool = try? container.decode(Bool.self) {
                self.object = bool
            } else {
                throw Error.noSingleValue
            }
        } else {
            throw Error.noContainter
        }
    }
}