curl --request PUT \
  --url https://api.astronpay.co/api/v1/fee-tiers/{orderType} \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --header 'x-api-secret: <api-key>' \
  --data '
[
  {
    "minVolumeBrl": 0,
    "maxVolumeBrl": 10000,
    "merchantFeePercentage": 0.01
  },
  {
    "minVolumeBrl": 10000,
    "maxVolumeBrl": null,
    "merchantFeePercentage": 0.008
  }
]
'

{
  "success": true,
  "tiers": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "minVolumeBrl": 0,
      "maxVolumeBrl": 10000,
      "platformFeePercentage": 0.005,
      "merchantFeePercentage": 0.01,
      "totalFeePercentage": 0.015
    }
  ]
}