curl --request POST \
--url 'https://api.cal.com/v1/availabilities?apiKey=' \
--header 'Content-Type: application/json' \
--data '
{
"scheduleId": 123,
"days": [
1,
2,
3,
5
],
"startTime": "1970-01-01T17:00:00.000Z",
"endTime": "1970-01-01T17:00:00.000Z"
}
'