sign
open fun signAuthorization(chainId: Array<Byte>, contractAddress: String, nonce: Array<Byte>, privateKey: String): String
Signs an Authorization hash in [EIP-7702 format](https://eips.ethereum.org/EIPS/eip-7702)
Return
The signed authorization.
Parameters
chain_id
The chain ID of the user.
contract_address
The address of the smart contract wallet.
nonce
The nonce of the user.
private_key
The private key of the user.