curl --request POST \
  --url https://sandbox.prezio.eu/api/consumers/ \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '{
  "external_id": "household_1",
  "email": "john@example.com",
  "extra_info": "Primary residence"
}'

{
  "external_id": "household_1",
  "email": "john@example.com",
  "extra_info": "Primary residence"
}