curl --request POST \
  --url https://api.woox.io/v3/spotMargin/interestRepay \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <x-api-key>' \
  --header 'x-api-signature: <x-api-signature>' \
  --header 'x-api-timestamp: <x-api-timestamp>' \
  --data '{
  "token": "<string>",
  "amount": 123
}'

{
  "success": true,
  "timestamp": 123
}