...

1. Verify the validity of access token

   1. Return 401 in case validation fails

2. Check user scopes in order to perform this action (scope = 'preperson:writecreate')

   1. Return 403 in case invalid scope(s)

...

1. Check external_id is not empty.

2. Check external_id is unique ? (unique within le?)

Save object to Mongo DB

Insert patient and set of submitted medical events

...