curl --request POST \
  --url https://tars.loopscale.com/v1/markets/lending_vaults/deposit \
  --header 'Content-Type: application/json' \
  --header 'user-wallet: <user-wallet>' \
  --data '
{
  "principalAmount": 123,
  "minLpAmount": 123,
  "vault": "<string>"
}
'

{
  "transaction": {
    "message": "<string>",
    "signatures": [
      {
        "publicKey": "<string>",
        "signature": "<string>"
      }
    ]
  },
  "stakeAccount": "<string>"
}