动态Webhook请求主体返回空

Question

我正在通过来自Dynamics的插件在自定义实体上的字段更改时触发Webhook。 Webhook在正确的情况下被命中，但是请求正文为空。这是我的功能：

    namespace UAM.Webhook.Functions
    {
        [DependencyInjectionConfig(typeof(DIConfig))]
        public static class BulkLibraryAssetTransfer
        {
            [FunctionName("BulkLibraryAssetTransfer")]
            public static async Task<HttpResponseMessage> Run([HttpTrigger(AuthorizationLevel.Function,"get", "post", Route = null)]HttpRequestMessage req, 
                ILogger log, [Inject] IDynamicsHelper dynamicsHelper)
            {
                log.LogInformation("Beginning BulkLibraryAssetTransfer");
    
                string reqBody = await req.Content.ReadAsStringAsync();
                
                //var remoteContext = GetRemoteExecutionContextFromJson(reqBody);
                log.LogInformation(reqBody);
    
                //return req.CreateResponse(HttpStatusCode.OK);
    
                var svc = dynamicsHelper.GetDynamicsSvc();
                var input = JObject.Parse(reqBody);
    
                Guid transferId = Guid.Parse(input["PrimaryEntityId"].ToString());
                Entity transfer = svc.Retrieve("uam_transfer", transferId, new ColumnSet(true));
                //log.LogInformation(transferId.ToString());
                bool hasFailures = false, hasSuccesses = false;
                IFlushingOperationLog logger = null;
    
                Execute(logger, svc, transfer, ref hasSuccesses, ref hasFailures, log);
    
                return req.CreateResponse(HttpStatusCode.OK);
            }
}
}

在上面，“ reqBody”的日志返回{"body":""}，因此，当我尝试解析任何响应时，其余代码将失败。我设置了另一个可以正常工作的函数，它在这里返回了一堆信息，例如BusinessUnitId，InitiatingUserId以及50多个其他字段。如果有人能指出我正确的方向，那就太好了。