curl --request POST \
  --url https://api.jup.ag/lend/v1/earn/redeem \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
  "signer": "HYbxGkNvEwvZ14RzJHPB9h3dWfXjxwAEhkyzJRHx1hBf",
  "shares": "1000000"
}
'

{
  "transaction": "AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAgAAEN..."
}