curl --request POST \
  --url https://gogs.example.com/api/v1/admin/users \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "username": "<string>",
  "email": "jsmith@example.com",
  "source_id": 123,
  "login_name": "<string>",
  "full_name": "<string>",
  "password": "<string>",
  "send_notify": true
}
'

{
  "id": 123,
  "username": "<string>",
  "login": "<string>",
  "full_name": "<string>",
  "email": "jsmith@example.com",
  "avatar_url": "<string>"
}