Amount in token's smallest unit (e.g., wei for ETH)
OptionalfallbackFallback recipient on Hub if forwarding fails (defaults to sender's Hub address equivalent)
Source chain name
Recipient address on destination chain
OptionalrpcOptional RPC URL for source chain
Sender address on source chain
Destination chain name
Token symbol (e.g., 'KAS', 'ETH', 'DYM')
High-level transfer parameters using chain/token symbols