IBCPacket: {
    data: Bytes;
    destination_channel: IBCChannelID;
    destination_port: IBCPortID;
    sequence?: PacketSDKType["sequence"];
    source_channel: IBCChannelID;
    source_port: IBCPortID;
    timeout_height?: PacketSDKType["timeout_height"];
    timeout_timestamp?: PacketSDKType["timeout_timestamp"];
}