curl --request GET \
  --url https://public-backend.bungee.exchange/api/v1/bungee/build-tx

{
  "success": true,
  "statusCode": 200,
  "result": {
    "approvalData": {
      "spenderAddress": "0x3a23F943181408EAC424116Af7b7790c94Cb97a5",
      "amount": "10000000",
      "tokenAddress": "0xaf88d065e77c8cc2239327c5edb3a432268e5831",
      "userAddress": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
    },
    "txData": {
      "data": "0x0000019f792ebcb9....5509974b0d678e1e3149b02f4",
      "to": "0x3a23F943181408EAC424116Af7b7790c94Cb97a5",
      "chainId": 42161,
      "value": "0"
    },
    "userOp": "tx"
  }
}