---
title: Generate Aadhaar Esign URL
slug: investor-onboarding-io/generate-aadhaar-esign-url
description: Learn how to generate an Aadhaar Esign URL for contract signing. This document outlines the necessary endpoint, headers, and input requirements, such as merchant ID, contract details, and signature type. Discover the expected output, which includes the Aa
docTags: 
createdAt: 2023-06-19T12:35:40.000Z
---

Generate the Aadhaar Esign URL to sign the Contract.

## Endpoint

**/api/onboardings/execute**

## Headers

| **Property**  | **Value**                                         |
| ------------- | ------------------------------------------------- |
| Content-type  | application/json                                  |
| Authorization | …access token… (alphanumeric string of length 64) |

## Input

```json
{
    "merchantId":".. merchant ID ..",
    "inputData":{
        "service": "esign",
        "type": "",
        "task": "createEsignUrl",
        "data": {
            "inputFile": ".. Unsigned PDF contract URL ..",
            "signatureType": "aadhaaresign",
            "redirectUrl": ".. redirect URL ..",
            "redirectTime": ".. redirect time in seconds ..",
            "eventCallbackUrl": ".. event Callback Url ..",
            "eventCallbackHeaders": { 
                " ..key.. ":".. value .."
            }
        }
    }
}
```

| **Property**           | **Data Type**                                        | **Example Values**                                                 |
| ---------------------- | ---------------------------------------------------- | ------------------------------------------------------------------ |
| merchantId             | String (*Required*) alphanumeric string of length 24 | userId from the investor login response field                      |
| inputData              | Object (*Required*)                                  | payload                                                            |
| –service               | Enum String (*Required*)                             | “esign”                                                            |
| –task                  | Enum String (*Required*)                             | “createEsignUrl”                                                   |
| –data                  | Object (*Required*)                                  | payload                                                            |
| —-inputFile            | URL String (*Required*)                              | Unsigned PDF contract URL (response from Create Contract PDF URL)  |
| —-signatureType        | ENUM Sting (*Required*)                              | “aadhaaresign”                                                     |
| —-redirectUrl          | ENUM Sting (*optional*)                              | “redirect URL”                                                     |
| —-redirectTime         | number Integer (*optional*)                          | “redirect time in seconds”                                         |
| —-eventCallbackUrl     | URL String (*Optional*)                              | Callback on events of success and failure                          |
| —-eventCallbackHeaders | Object (*Optional*)                                  | In case of any headers needs to be passed for the eventCallbackUrl |

## Expected Output

```json
{
    "object": {
        "task": "url",
        "id": "....",
        "customerId": "....",
        "inputFile": "..inputUrl..",
        "signatureType": "aadhaaresign",
        "multiPages": "true",
        "name": "..name..",
        "showSignatureConsent": "...",
        "email": "...emailId...",
        "redirectUrl": "... redirect Url ...",
        "createSignatureOptions": [],
        "result": {
            "token": "..token..",
            "isUsed": 1,
            "url": "..Aadhaar Esign Url...",
            "uid": "",
            "inputFile": "..inputUrl..",
            "email": "...emailId...",
            "redirectUrl": "... redirect Url ...",
            "createSignatureOptions": [],
            "signatureType": "aadhaaresign",
            "name": "..name..",
            "showSignatureConsent": "...",
            "scaleSignature": "...",
            "selectPage": 1,
            "signaturePosition": "Bottom-Right",
            "pageNo": 1
        }
    }
}
```

:::hint{type="info"}
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:::