curl --request POST \
  --url https://api.roissingue.com/v1/quote \
  --header 'Content-Type: application/json' \
  --data '
{
  "fromToken": {
    "chainId": 8453,
    "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "100000000"
  },
  "toToken": {
    "slug": "circle-usd"
  },
  "feeToken": {
    "chainId": 8453,
    "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
  },
  "fromAddress": "0x6eBf2153f931334714984c7F5a8E574207927Cc7",
  "toAddress": "0x6eBf2153f931334714984c7F5a8E574207927Cc7",
  "slippage": 0.01
}
'