Data for TableView

Hi everyone...

I have been doing queries to database and I get an array of json with String format, and I need to convert (downcasting) to Array or Dictionary to create a TableView with the data got previously

func closeTaskService(_ valor: String, completionHandler: (_ response:NSString) -> ()) {
        let request = NSMutableURLRequest(url: URL(string: "http:/ 
        let db = self.dato.object(forKey: "dbName")
        let db1 = db as AnyObject? as? String
        let dbName : String = (db1 as AnyObject? as? String)!
        request.httpMethod = "POST"
        let postParams = "DB_name="+dbName+"&"+"valor=%"+valor+"%"
        / 
        request.httpBody = postParams.data(using: String.Encoding.utf8)
        let task = URLSession.shared.dataTask(with: request as URLRequest) {
            (data, response, error ) in
            / 
            let responseString: String = String (data: data!, encoding: String.Encoding(rawValue: String.Encoding.utf8.rawValue))!
            / 
            
            let numbers = responseString.replacingOccurrences(of: "[", with: "", options: .literal, range: nil)
            let numbers2 = numbers.replacingOccurrences(of: "]", with: "", options: .literal, range: nil)
            / 
            / 
            let myArray : [String] = numbers2.components(separatedBy: "},{")
            print(myArray)
            
            
            for array in myArray{
                print(array)
                print(myArray[1])
            }
        }
        task.resume()
    
    }