How to parse mixed type of json array in Swift

Question

I have a json array that contains different type of object. I don't have any chance to change the end point. I am using the AFNetworking. I want to display product detail according to the Product.type field. But I can't parse the json. AFNetworking throws an error: 417 - Expectation Failed

Is it possible to parse it?

Here is the generic AF request method:

@discardableResult
private static func performRequest<T:Decodable>(route:APIRouter, decoder: JSONDecoder = JSONDecoder(), completion:@escaping (Result<T, AFError>)->Void) -> DataRequest {
    return AF.request(route)
        .responseDecodable (decoder: decoder){ (response: DataResponse<T, AFError>) in completion(response.result)
    }
}

static func getProduct(id:Int, completion:@escaping (Result<Product, AFError>)->Void){
    performRequest(route: APIRouter.getProduct(id: id), completion: completion)
}

My struct is:

struct Product: Codable {
    let id: Int
    let type: Int 
    let details: [Detail1] // this array can contain Detail1, Detail2, Detail3 in any order
}

struct Detail1: Codable {
        let id: Int
        let name: String
        let surname: String
}

struct Detail2: Codable {
        let id: Int
        let title: String
        let subtitle: String
}

struct Detail3: Codable {
        let id: Int
        let thickness: Int
        let length: Int
}

I know my struct doesn't reflect the json string. Here is the full JSON String:

{"id": "ST_34", "users" : [{"name" : "Foo", "surname" : "Bar"}],
 "products" :[
              {"id": 268, "type" : "XDFT", 
                        "details" : [{"id": 1, "name" : "xray", "surname" : "TRvb"}]
              },
{"id": 764, "type" : "ZRFT", 
                        "details" : [{"id": 27, "thickness" : 2, "length" : 12}]
              }
             ]
}