Get Blocked Item
GET /self/{shopId}/blacklist/{blockedItemId}
curl \
-X GET https://dev.sellpass.io/self/{shopId}/blacklist/{blockedItemId} \
-H "Authorization: $API_KEY"
curl \
-X GET https://dev.sellpass.io/self/{shopId}/blacklist/{blockedItemId} \
-H "Authorization: $API_KEY"