curl --request POST \
  --url https://api.example.com/api/v1/auth/users/{user_id}/roles \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "role": "<string>"
}
'

{
  "deny_scopes": [
    {
      "action": "<string>",
      "resource": "<string>"
    }
  ],
  "permissions": [
    {
      "action": "<string>",
      "resource": "<string>"
    }
  ],
  "role_names": [
    "<string>"
  ],
  "updated_at": "<string>",
  "user_id": "<string>"
}