curl --request PUT \
  --url https://app.standardmetrics.io/beta/investment/overrides/upsert/ \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "ownerships": [],
  "post_money_valuations": [],
  "fair_values": []
}
'

{
  "message": "<string>"
}