No, because your Nginx server decrypts that TLS connection so can access the plaintext data. This is typically called encrypted-in-transit. E2EE means that it'

No, because your Nginx server decrypts that TLS connection so can access the plaintext data. This is typically called encrypted-in-transit. E2EE means that it's always encrypted from the sending device to the receiving device and nothing in the middle (including the service operator) can read it.