curl 'https://api.weixin.qq.com/wxaapi/broadcast/goods/setkey?access_token=xxxxxx' -X POST -d '{"goodsKey": ["productId"]}'

{"errmsg":"goodsKey must be Array<string> rid: 600a7dbc-03af7bf7-5f9a9b1f","errcode":200002}

接口文档地址：https://developers.weixin.qq.com/miniprogram/dev/framework/liveplayer/pendant.html