The update pricing scheme request details.
pricing_schemesobject<update_pricing_scheme_request>[]Requiredpricing_schemeobject<pricing_scheme>Requiredfixed_priceobject<money>Optionalcurrency_codestring<currency_code>RequiredvaluestringRequiredtiersobject<pricing_tier>[]Optionalamountobject<money>Requiredcurrency_codestring<currency_code>RequiredvaluestringRequiredcreate_timestring<date_time>Optionalupdate_timestring<date_time>Optional