We will want to understand the overhead of validating and signing tokens through a microbenchmark. There should be three microbenchmarks:

• Test the generation of tokens on the happy path, when a _signer already exists
• Test the generation of tokens when we need to create a new _signer object.
• Test the validation of tokens.

We will use the `MockAuthSessionTokenManager` to isolate out the cost of token validation/generation, rather that measuring the cost of reading/writing to the db.