Estou integrado API de preços fixos e me retorna erro 405

{"markup": 0,"basePrice": 155.69,"listPrice": 155.69,"fixedPrices": [{"tradePolicyId": 1,"value": 155.69,"listPrice": 155.69,"minQuantity": 1,"dateRange": {"from": "2020-01-01T22:00:00Z","to": "2020-12-31T22:00:00Z"}},{"tradePolicyId": 1,"value": 0.00"listPrice": null,"minQuantity": 1}]}