为渠道顾问创建独立产品

Question

url: "https://api.channeladvisor.com/v1/Products?access_token=xxxxxxxxx"

body_params = {"Title":"string","Sku":"34123"}

'Content-Type'  => 'application/json'

所有事情都已完成，但请求响应是

400 => Net::HTTPBadRequest

请告诉我，我错过了什么？