curl --request POST \
  --url https://app.prontohq.com/api/v2/contacts/single_enrich \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --data '{
  "firstname": "Mathieu",
  "lastname": "Brun-Picard",
  "domain": "prontohq.com",
  "company_name": "Pronto",
  "linkedin_url": "https://www.linkedin.com/in/mathieu-brun-picard/",
  "webhook_url": "https://webhook.site/8b53c96f-f2cd-4c24-bc09-b3c2176d7ea8",
  "enrichment_type": [
    "phone"
  ],
  "custom": {
    "hubspot_id": "4447901"
  }
}'

{
  "enrichment_id": "123e4567-e89b-12d3-a456-426614174000",
  "first_name": "Mathieu",
  "last_name": "Brun-Picard",
  "email": "mathieu@prontohq.com",
  "phone": "+12015550123",
  "status": "success",
  "custom": {
    "hubspot_id": "4447901"
  }
}