get https://sandbox.onebrick.io/v2/payments/sandbox-widget/?accessToken=&redirect_url=&user_id=
This API helps connect the BRICK account; This API should be integrated into Frontend.
Request Parameters 
| Key Parameters | Data Type | Description | 
|---|---|---|
| AccessToken | String | Public-access-token generated using your clientId and clientSecret | 
| Redirect_url | String | The url to which brick POST a response at the end of the widget flow | 
| User_id | String | Unique identifier for user connecting the account | 
Response Parameters 
| Key Parameters | Data Type | Description | 
|---|---|---|
| accessToken | String | An array of generated access token after successful accounts/institutions connection | 
| bankId | String | unique id of the institution | 
Once the end-user connects their accounts/institutions, we would be making a POST API call to the redirect url with numerous a user-access-token assigned explicitly to the connected accounts/institutions. You need to have a REST api with a POST request listening on that endpoint.
