注：此文档中的所有接口从3.9已经支持
1.注册或更新ConferenceRosterInfo回调事件
REST URL
POST https://sdk.xylink.com/api/rest/external/{version}/callbacks/roster/{confNumber}?enterpriseId=XXX&signature=XXX
请求消息体示例（Json）
{
"handlerUrl": "https://test.top/callback/event",
"callbackEvent": "ConferenceRosterInfo"
}2.获得所有ConferenceRosterInfo回调事件
REST URL
GET https://sdk.xylink.com/api/rest/external/{version}/callbacks/roster?enterpriseId=XXX&signature=XXX
成功时返回结果数据，失败时返回小鱼RESTAPI错误码
[
{
"confNumber": "9100982727",
"callbackEvent": "ConferenceRosterInfo",
"handlerUrl": "https://test.top/callback/event"
}
]
3.删除ConferenceRosterInfo回调事件
REST URL
DELETE https://sdk.xylink.com/api/rest/external/{version}/callbacks/roster/{confNumber}?enterpriseId=XXX&signature=XXX
成功时返回httpcode 200，失败时返回小鱼RESTAPI错误码
4.注册或更新NemoHands回调事件
REST URL
POST https://sdk.xylink.com/api/rest/external/{version}/callbacks/hands/{confNumber}?enterpriseId=XXX&signature=XXX
请求消息体示例（Json）
{
"handlerUrl": "https://test.top/callback/event",
"callbackEvent": "ConferenceRosterInfo"
}5.获得所有NemoHands回调事件
REST URL
GET https://sdk.xylink.com/api/rest/external/{version}/callbacks/hands?enterpriseId=XXX&signature=XXX
成功时返回结果数据，失败时返回小鱼RESTAPI错误码
[
{
"confNumber": "9100982727",
"callbackEvent": "ConferenceRosterInfo",
"handlerUrl": "https://test.top/callback/event"
}
]
6.删除NemoHands回调事件
REST URL
DELETE https://sdk.xylink.com/api/rest/external/{version}/callbacks/hands/{confNumber}?enterpriseId=XXX&signature=XXX
成功时返回httpcode 200，失败时返回小鱼RESTAPI错误码