Post to `/xled/v1/playlist` with empty entries returns code: 0

[scrool]

Interestingly following post:

POST /xled/v1/playlist HTTP/1.1
Host: REDACTED
User-Agent: python-requests/2.26.0
Accept-Encoding: gzip, deflate
Accept: */*
Connection: keep-alive
X-Auth-Token: KDrffKRHnEQ=
Content-Length: 15
Content-Type: application/json

{"entries": []}

Returns:

HTTP/1.1 200 OK
Content-Type: application/json
Content-Length: 10
Connection: close

{"code":0}

Tested on FW versions: 2.6.0 and 2.8.3.

I'm not sure if it is only if entries are empty (which might mean that it returned number of items in the playlist) or it is generic response for this call.