The toolkit instance to attach a signer
Key to load in memory
Optionalpassphrase: stringIf the key is encrypted passphrase to decrypt it
Optionalmnemonic: stringFaucet mnemonic
Optionalsecret: stringFaucet secret
The JSON faucets are no longer available on https://teztnets.com/
Import a key to sign operation with the side-effect of setting the Tezos instance to use the InMemorySigner provider