Alice puts assets in channel
Alice downloads XLN wallet. After logging in with passphrase/mnemonic, it shows a list of hubs (downloaded from public
hubs contract array), along with various metrics and data: name, total collateral locked around the hub, gasused (the most reliable one) etc.
Alice chooses Hub and sets up a channel offchain and adds asset_id=0,1 (weth/dai). Both parties sign off on a
dispute_nonce=1 entries=[ [0,0], //asset_id, offdelta