I receive an error when posting this command: curl -k PUT -H "X-Appery-Database-Id: 553b56d9e4b0c3e581ee6be4" [-H "X-Appery-Session-Token: "] -H "Content-Type: application/json" -d '{"":""}' https://api.appery.io/rest/1/db/colle... Error: {"code...