Upgrade data collect protocol (#78)

diff --git a/protocol b/protocol
index 24788cf..6882545 160000
--- a/protocol
+++ b/protocol
@@ -1 +1 @@
-Subproject commit 24788cf41807048dcbe8dba0958688aaaf630d73
+Subproject commit 68825459980d14702de8fb2303c7997624129991