How to get the Input Address from vin where only a txid is given (Insight-Api)
First, use the API to get the information on the txid.

/api/tx/e3f0e88ce224d342a0189c1b9d2fd488d8bda2f303dbe1e1dbbaa5f51d9f4a53


This result will include all of the details you're looking for. Here are the parts that you're asking about. The n here corresponds to the vout number above, I believe, and the value and addresses values are the input amount and address.

"value": "2405.38864196",
"n": 1,
"scriptPubKey": {
    ...
    "addresses": [
        "1NG1nT2ZuFw47f41mGjYpPp7J837yTQZhB"
    ]
},
...