curl --request POST \
  --url https://us.api.flexprice.io/v1/webhook-events/customer.created

{
  "customer": {
    "address_city": "<string>",
    "address_country": "<string>",
    "address_line1": "<string>",
    "address_line2": "<string>",
    "address_postal_code": "<string>",
    "address_state": "<string>",
    "created_at": "2023-11-07T05:31:56Z",
    "created_by": "<string>",
    "email": "<string>",
    "environment_id": "<string>",
    "external_id": "<string>",
    "id": "<string>",
    "integrations": [
      {
        "created_at": "2023-11-07T05:31:56Z",
        "created_by": "<string>",
        "entity_id": "<string>",
        "entity_type": "customer",
        "environment_id": "<string>",
        "id": "<string>",
        "provider_entity_id": "<string>",
        "provider_type": "<string>",
        "status": "published",
        "tenant_id": "<string>",
        "updated_at": "2023-11-07T05:31:56Z",
        "updated_by": "<string>"
      }
    ],
    "metadata": {},
    "name": "<string>",
    "status": "published",
    "tenant_id": "<string>",
    "updated_at": "2023-11-07T05:31:56Z",
    "updated_by": "<string>"
  },
  "event_type": "subscription.created"
}