Get next verification step

Websocket Part:

1. Connect to websocket_url

2. Send subscribe message, example:

   json

   {
     "command": "subscribe",
     "identifier": "{\"channel\":\"BynnKycChannel\"}"
   }

   
   

3. After subscribe message you will automaticly get the preflight payload, then you will get it on all event changes.
   Example:

   json

   {
       "identifier": "{\"channel\":\"BynnKycChannel\"}",
       "message": {
           "extra_data": {},
           "session": "cTMKciZaG4iv7FfRZk1nxRW1",
           "session_id": "cTMKciZaG4iv7FfRZk1nxRW1",
           "entity_id_state": "none_received",
           "entity_id_document_type": "unknown",
           "requirement": {
               "requirement_type": "identity_document",
               "status": "awaiting_receipt",
               "flow_order": 100
           },
           "screen": {
               "show": "scan_id_document_front_screen",
               "parameters": {
                   "camera": "back",
                   "camera_quality": "ultra",
                   "allow_manual_upload": false,
                   "multipage": false,
                   "title": null,
                   "text": null
               }
           }
       }
   }