curl -X POST \
 /customer-email-addresses/{id}/default \
 --header "Authorization: Bearer <token>"

{
  "id": "00000000-0000-0000-0000-000000000000",
  "email": "john.doe@example.com",
  "receiverName": "John Doe",
  "type": "TYPE_COMPANY",
  "default": "true"
}