Question about signature on applications

[panudh]

Hello,

I am new here - need some help. When I applied for my Naturalization, I was asked to sign my full name, not my usual signature. My naturalization certificate and my US Passport have the full signature. My Indian passport has my normal everyday signature. When I am applying for PIO/OCI card and renunciation of Indian citizenship, I am not sure which signature to use on my application - the full signature as in US documents (naturalization certificate + Passport) or my usual signature as on my Indian Passport?
Can someone please help?

TIA!