curl --request GET \
  --url https://qubesync.com/api/v1/connections \
  --header 'Authorization: Basic <encoded-value>'

{
  "data": [
    {
      "id": "123e4567-e89b-12d3-a456-426614174000",
      "app_id": "550e8400-e29b-41d4-a716-446655440000",
      "username": "550e8400-e29b-41d4-a716-446655440001",
      "last_connected_at": "2023-01-01T12:00:00Z",
      "name": "My Customer Inc.",
      "company_file": "My Company File.QBW",
      "qbxml_version": "14.0",
      "quickbooks_product_name": "QuickBooks Pro 2021",
      "type": "standard",
      "redirect_url": "https://myapp.com/quickbooks-setup-callback",
      "links": {
        "self": "/api/v1/connections/123e4567-e89b-12d3-a456-426614174000",
        "ui": "/app/connections/123e4567-e89b-12d3-a456-426614174000",
        "onboarding": "https://qubesync.com/onboarding/123e4567-e89b-12d3-a456-426614174000"
      }
    }
  ]
}