curl --request DELETE \
  --url https://api.gominerva.com/risk-assessments/v2/assessments/{assessmentId}/canvases/{canvasId} \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "expected_version": 123
}
'

{
  "status": 200,
  "msg": "OK",
  "result": {}
}