Consider this line,
"cassandra.columns.mapping" = ":payload_provider,payload_totalNoTickets, Version"
There the key is not set in Cassandra. I am not sure but I think you may have to set the key as well because the row key is mandatory for Cassandra column family.
e.g.: "cassandra.columns.mapping" = ":key, payload_provider,payload_totalNoTickets, Version"
You may need to set a unique field as the key.