Improve logging for better consistency and clarity

Our request / response logging seems to be inconsistent across providers. We log both at the `manager` level and the `provider` level and we only seem to log responses for "rpc" / http providers. This is an issue to try to consolidate and improve our logging so that we create less unnecessary noise and focus on more meaningful logs across the manager <-> provider relationship.

We should be conscious to make use of appropriate log levels when looking into this.