# ItemSyncRequest
# one of
[ type: # required
    empty
  <object>
, type: # required
    added
  value: # required
    # item that was added, client-side
    <number> # between 0 and 255
, type: # required
    synced
  time: # required
    # last time the server confirmed a change, from the client's perspective
    # Server time
    <number> # between 0 and 18446744073709551615
, type: # required
    changed
  value: # required
    # timed value
    <number> # between 0 and 255
  time: # required
    # timed time
    # Server time
    <number> # between 0 and 18446744073709551615
, type: # required
    deleted
  time: # required
    # last time the server confirmed a change, from the client's perspective
    # Server time
    <number> # between 0 and 18446744073709551615
]