{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to change the signature key of an account in a blockchain network?","a":"Backup  the original signature key: Before changing the signature key, make sure to backup the original signature key in case of loss or accidental operation."}]}],"pr":"6d87960519efdb591489042a8689edfd626ed0388b0ab5c16645ac01263be5f3"}