Bridge contract address on Ethereum mainnet
Access control contract address
updateRelayer( _relayer: 0x..., update: true )
grantRole( role: RELAYER_MANAGER_ROLE, account: 0x... )
Supports any ERC20 collateral token
addCollateral( _token: 0x90A2a4c76b5D8c0bc892A69EA28Aa775a8f2dD48 )