curl --request POST \
  --url https://api.bitbybit.studio/bitlogin/api/open/v1/loyalty/point-conversion \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "tiers": [
    {
      "currencyAmount": "<string>",
      "points": 2
    }
  ]
}
'

{
  "companyId": 123,
  "tiers": [
    {
      "id": "<string>",
      "currencyAmount": 123,
      "points": 123
    }
  ]
}