View Source DiodeClient.OasisSapphire (Diode Client v1.2.8)
Oasis Sapphire Query Call Signing https://github.com/oasisprotocol/sapphire-contracts/blob/main/contracts/CallPermit.sol
Oasis Sapphire Query Call Signing https://github.com/oasisprotocol/sapphire-contracts/blob/main/contracts/CallPermit.sol