Clarify what is not found in the 404 errors

[clarkerican]

A field should be added to the 404 errors to specify exactly what was not found.
Otherwise, the type should be updated to be more specific. For example, "User Not Found".
This will enable the front end to know exactly what went wrong.

[jackcmeyer]

Isn't this what the message is for? What is the need for this?

[clarkerican]

In case the front end wants to display it's own error messages. Otherwise, we should update the error messages to be helpful to the end user if they will be displayed on the frontend