curl --request GET \
  --url https://realtime-api.voiceflow.com/v1/stable/conversation-state/{userID} \
  --header 'Authorization: Bearer <token>'

{
  "state": {
    "stack": [
      {
        "diagramID": "<string>",
        "name": "<string>",
        "storage": {},
        "variables": {},
        "nodeID": "<string>",
        "commands": [
          {
            "type": "<string>"
          }
        ],
        "dynamicCommands": {}
      }
    ],
    "storage": {},
    "variables": {}
  }
}