Parameter	Type	Description
accessId*	String	Unique identifier that ensures that the integrator has the authorization to make requests on behalf of the customer. (Specifically, a customer's merchant account)

Parameter	Type	Description
token*	Object/Hash	Object containing authentication parameters - most crucially the requestId which is required with every call. For more information, see the Token Object.
payerId*	String	ID of payer being updated. This ID will have been returned when creating the payer.
payer*	Object/Hash	Object containing payer fields. For more info see The Payer Object.