MultiDataEvent {
topic1: String(topic-1),
topic2: Contract(CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4),
data1: String(data-1),
data2: String(data-2),
}
Contract(CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM)
multi_data {
#[topic] topic1: String,
#[topic] topic2: Address,
#[data] data1: String,
#[data] data2: String,
}