curl --location --request GET 'https://api.smartpost.jp/v1/messages/00000000-0000-0000-0000-acc000000001_00000000-0000-0000-0000-acc000000001?change-read-status=false&with-image-id' \
--header 'Accept: application/json' \
--header 'Authorization: Bearer <TOKEN>' \
--header 'Host: api.smartpost.jp' \
--header 'User-Agent: Mozilla/5.0 (platform; rv:geckoversion) Gecko/geckotrail Firefox/firefoxversion'