Reflexive relation with nested data

I'm sorry if this is a basic question, but since I'm quite new to ember, I'd like to know if there is any best practice for a case like this. For example, I have the follow endpoints that returns the payloads below:

https://api.example.com/v1/user

[
    {
        "user": "user1",
        "firstName": "Foo1",
        "lastName": "Bar1",
        "url": "https://api.example.com/v1/user/user1"
    },
    {
        "user": "user2",
        "firstName": "Foo2",
        "lastName": "Bar2",
        "url": "https://api.example.com/v1/user/user2"
    }
]

And each of the "url" endpoint returns something like this:

https://api.example.com/v1/user/user1

{
    "user": "user1",
    "firstName": "Foo1",
    "lastName": "Bar1",
    "age": 21,
    "address": "User1 Address"
    ... more info ...
}

We see that some properties in "/user" are repeated in "/user/user1".

What would be the best practice to create the "user" model?

Should I have two models? Like for example a "users" model for the "/user" and a "user" model for "/user/user1"?

Could somehow have just one model "user" that would fit both endpoints?

Thanks in advance!