curl --request POST \
  --url https://{domain}/wp-json/sagescreen/v1/deal/approve \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "deal_uuid": "3d55ae7a-af8b-46c1-ae1c-09afa207ac7f",
  "approved": true,
  "external_quote_id": "QU-00412"
}
'

{
  "success": true,
  "data": {
    "deal_id": 1042,
    "status": "ss_approved"
  }
}