Add item with the included string of data to the cloud account's storage.
{"msg":"Cloud","action":"Add","Item":"foo","Data":"bar"}

If the item already exists, the server will send and cancel adding the item:
{"MSG":"CloudDataAlreadyExists"}

If the cloud space is too much for it to fit then the server will send and cancel adding the item:
{"MSG":"CloudSizeLimitReached"}

If the item doesn't exists, the server will send a success message:
{"MSG":"CloudDataAdded"}

If the cloud account doesn't exists:
{"MSG":"CloudAccountNotRegistered"}