salt": "193e9997-5a10-4d9e-a829-69ddcf6cbf70" - This paramater is used when encrypting/decrypting your daemon password. For improved security, you can set the salt to anything else (such as a different UUID4 string).
"jumpnet"- This parameter defines which network you are going to be running your wallet daemon on.
"maxGasPrice"- Both parameters refer to ETH gas prices and can be used to constrain the minimum and maximum amount of gas to be used when signing a transaction.
m/44'/60'/0'). You can use MyEtherWallet to rebuild your private key from the 12-word recovery phrase.