¿Qué variables están disponibles en los flujos de Shopify?

export interface ShopifyOrderWebhook {
    id: number,
    admin_graphql_api_id: string,
    app_id: null,
    browser_ip: null,
    buyer_accepts_marketing: true,
    cancel_reason: 'customer',
    cancelled_at: Date,
    cart_token: null,
    checkout_id: null,
    checkout_token: null,
    client_details: null,
    closed_at: null,
    confirmation_number: null,
    confirmed: false,
    contact_email: string,
    created_at: Date,
    currency: 'USD' | 'EUR',
    current_subtotal_price: string,
    current_subtotal_price_set: ShopifyPriceSet,
    current_total_additional_fees_set: null,
    current_total_discounts: string,
    current_total_discounts_set: ShopifyPriceSet,
    current_total_duties_set: null,
    current_total_price: string,
    current_total_price_set: ShopifyPriceSet,
    current_total_tax: string,
    current_total_tax_set: ShopifyPriceSet,
    customer_locale: 'en',
    device_id: null,
    discount_codes: [],
    email: string,
    estimated_taxes: false,
    financial_status: 'voided',
    fulfillment_status: 'pending',
    landing_site: null,
    landing_site_ref: null,
    location_id: null,
    merchant_of_record_app_id: null,
    name: string,
    note: null,
    note_attributes: [],
    number: Number,
    order_number: number,
    order_status_url: string,
    original_total_additional_fees_set: null,
    original_total_duties_set: null,
    payment_gateway_names: [
      'visa',
      'bogus'
    ],
    phone: string | null,
    po_number: null,
    presentment_currency: 'USD' | 'EUR',
    processed_at: null,
    reference: null,
    referring_site: null,
    source_identifier: null,
    source_name: 'web',
    source_url: null,
    subtotal_price: string,
    subtotal_price_set: ShopifyPriceSet,
    tags: "",
    tax_exempt: false,
    tax_lines: [],
    taxes_included: false,
    test: true,
    token: string,
    total_discounts: string,
    total_discounts_set: ShopifyPriceSet,
    total_line_items_price: string,
    total_line_items_price_set: ShopifyPriceSet,
    total_outstanding: string,
    total_price: string,
    total_price_set: ShopifyPriceSet,
    total_shipping_price_set: ShopifyPriceSet,
    total_tax: string,
    total_tax_set: ShopifyPriceSet,
    total_tip_received: string,
    total_weight: number,
    updated_at: Date,
    user_id: null,
    billing_address: ShopifyOrderShippingAddress,
    customer: ShopifyCustomer,
    discount_applications: [],
    fulfillments: [],
    line_items: ShopifyOrderLineItem[],
    payment_terms: null,
    refunds: [],
    shipping_address: ShopifyOrderShippingAddress,
    shipping_lines: ShopifyShippingLine[]
}