curl --request PATCH \
  --url https://www.dench.com/api/v1/agent-config/heartbeat \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "enabled": true,
  "intervalMs": 0,
  "instructions": "<string>"
}
'

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "code": "<string>",
    "details": "<unknown>"
  }
}