curl --request PATCH \
  --url https://realtime-api.voiceflow.com/v1/stable/conversation-state/<userID>/variables \
  --header 'Authorization: Bearer <token>'
  --header 'Content-Type: application/json' \
  --data '{
  "variables": {}
}'

const response = await fetch('https://realtime-api.voiceflow.com/v1/stable/conversation-state/<userID>/variables?projectID=<projectID>&environmentAlias=<environmentAlias>&version=<version>', {
  method: 'PATCH',
  headers: {
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "variables": {}
  }),
});
const data = await response.json();

import requests

response = requests.patch(
    'https://realtime-api.voiceflow.com/v1/stable/conversation-state/<userID>/variables?projectID=<projectID>&environmentAlias=<environmentAlias>&version=<version>',
    headers={'Authorization': 'Bearer <token>'},
    json={
      "variables": {}
    },
)
data = response.json()

vf conversation state update-variables --user-id <userID> --project-id <projectID> --environment-alias <environmentAlias> --version <version> \
  < body.json