I've heard of it
Ah oui, j'en ai entendu parler.
Oh yeah, I've heard about it.
Je crois que j'en ai entendu parler.
I think I've heard of it.
Non, mais j'en ai entendu parler.
No, but I've heard about it.
J'en ai entendu parler, mais je le croyais perdu.
I’d heard of it, but I thought it was lost.
— Paddington 2 (2017)
Yes, I've heard about it.
J'en ai entendu parler par mon père, mais il me disait qu'elle était morte.
I heard about her from my father, but he told me she was dead.
— Jean de Florette (1986)