Request: submit integers, floats, and booleans in `$network.request` (POST)

As per title. Some endpoints (namely ours) is very strict on the kind of data it will accept, and it's critical for on-boarding users.

Start by locating the `$network.request` POST entry point and inspect how request values are handled. Confirm the change is complete when integer, float, and boolean values can be submitted to strict endpoints without being treated as strings.

Written by the indexing model from the issue text.