curl --request POST \
  --url https://api.sandbox.usenash.com/v1/feedback/external_identifier/{external_identifier} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "score": 123,
  "comment": "<string>"
}
'

{
  "id": "<string>",
  "deliveryId": "<string>",
  "score": 123,
  "comment": "<string>"
}