The current REST API does not follow the traditional convention for RESTFul APIs.
Below is what each API should ideally be:
/users/create - POST /users
/users/edit - PUT /users
/users/list - GET /users
And to lookup a specific user - GET /users/<uuid>
The same conventions should be followed for the /transaction-types and /users/airdrop API endpoints. Additionally, /users/airdrop should just be /airdrop.