Updates customer information associated with a cart.
Buyer identity is used to determine
[international pricing](https://shopify.dev/custom-storefronts/internationalization/international-pricing)
and should match the customer's shipping address.
Access Scopes
Arguments
buyerIdentity:
CartBuyerIdentityInput! -
The customer associated with the cart. Used to determine
[international pricing](https://shopify.dev/custom-storefronts/internationalization/international-pricing).
Buyer identity should match the customer's shipping address.