エンドユーザーに認可するスコープを選択させる方法

$ curl -s -X POST "https://us.authlete.com/api/${SERVICE_API_KEY}/auth/authorization" \
 -H "Authorization: Bearer ${SERVICE_ACCESS_TOKEN}" \
 -H 'Content-type: application/json' \
 -d '{"parameters":
  "redirect_uri=...
   &client_id=...
   &response_type=code
   &scope=read+write"}'

{
  "resultCode": "A004001",
  "resultMessage":
   "[A004001] Authlete has successfully issued a ticket
    to the service (API Key = ...) for the authorization
    request from the client (ID = ...).
    [response_type=code, openid=false]",
...
  "scopes": [
    {
      "defaultEntry": false, "description": "Read",
      "descriptions": [
        { "tag": "en", "value": "Read" },
        { "tag": "ja", "value": "参照" } ],
    "name": "read"
    },
    {
      "defaultEntry": false, "description": "Write",
      "descriptions": [
        { "tag": "en", "value": "Write" },
        { "tag": "ja", "value": "更新" } ],
    "name": "write"
    }
  ]
...

curl -s -X POST "https://us.authlete.com/api/${SERVICE_API_KEY}/auth/authorization/issue" \
-H "Authorization: Bearer ${SERVICE_ACCESS_TOKEN}" \
-H 'Content-type: application/json' \
 -d '{"subject":"...",
   "ticket": "...",
   "scopes":["read"]}'

{
  "resultCode": "A040001",
  "resultMessage":
    "[A040001] The authorization request was processed successfully.",
  "accessToken": "...",
  "accessTokenDuration": ...,
  "accessTokenExpiresAt": ...,
  "action": "LOCATION",
  "responseContent":
    "https://client.example.org/cb/example.com
     #access_token=...
      &token_type=Bearer
      &expires_in=...
      &scope=read"}