Chased offered to loan your shell LLC business hundreds of thousands of dollars without collateral or any credit history? Why don't I believe you?
The way to do it is to have your attorneys be the managers of your holding companies, then you can direct them (under privilege, afaik) to sign what you like. This is how I do it. Alternately if you have staff you trust and expect to have a long time (I don’t), they can be your holding company’s manager(s).