METADATA_COLUMNS
id(int) username(str) domain(str) event(str) etag(str) expires(int) received_time(int) body(str) sender(str) priority(int)
METADATA_KEY
1 2 3 
METADATA_READONLY
0
METADATA_LOGFLAGS
0
METADATA_DEFAULTS
NIL|NIL|NIL|NIL|NIL|NIL|NIL|NIL|NIL|0
