The eventing of the Miele 3rd Party API is based on the concept of Server-Sent-Events (SSE).
The API supports two event types:
All Appliances events - If any of the connected appliances changes it state, an event will be sent.
The All Appliances Events subscription will return the content of a GET /devices request.
                                            All Appliances Events
                                            curl https://api.mcs3.miele.com/v1/devices/all/events \
                                            -H "Accept:text/event-stream" -H "Accept-Language: {language_code}" -H "Authorization: Bearer {access_token}"
                                        
                                
                            Appliance Events - If one connected appliances changes its state, an event will be sent.
The Appliance Event will return the content of a GET /devices/deviceId
                                
                                            Appliances Events
                                            curl https://api.mcs3.miele.com/v1/devices/{deviceId}/events \
                                            -H "Accept:text/event-stream" -H "Accept-Language: {language_code}" -H "Authorization: Bearer {access_token}>"