curl --request GET \
  --url https://api.ecrypt.com/v1/customers \
  --header 'x-api-key: <api-key>'

{
  "requestId": "000000000000000000000",
  "customers": [
    {
      "id": "00000000-0000-0000-0000-000000000000",
      "firstName": "John",
      "lastName": "Doe",
      "company": "US Oil Supply",
      "merchantIdentifier": "EID-987654-321",
      "phoneNumber": "555-555-555",
      "emailAddress": "email@email.com",
      "shippingAddress": {
        "name": "<string>",
        "line1": "<string>",
        "line2": "<string>",
        "city": "<string>",
        "state": "<string>",
        "postalCode": "<string>",
        "country": "<string>"
      },
      "metadata": {}
    }
  ],
  "errors": [
    {
      "type": "<string>",
      "message": "<unknown>"
    }
  ]
}