curl --location --request PUT 'http://dev-cn.your-api-server.com/packs/123/releases/2' \
--header 'Content-Type: application/json' \
--data-raw '{
"releaseNotes": "The first release."
}'
{
"packId": 1003,
"releaseNotes": "The first release.",
"createdAt": "2018-04-11T00:18:57.946Z",
"releaseId": 2,
"packVersion": "1.0.3",
"sdkVersion": "1.5.1"
}