curl --request POST \
  --url https://api.kameleoon.com/results/estimation \
  --header 'Content-Type: application/json' \
  --data '
{
  "trafficAllocation": {},
  "dailyVisitors": 123,
  "conversionRate": 123,
  "reliability": 123,
  "improvement": 123
}
'

{
  "days": 123
}