Unable to override the server for a specific path (Open API swagger specification)

Open Api Json specification:

 

{

..

..

 "host":"account-d.docusign.com",
 "basePath":"/oauth/",
 "schemes":[
   "https"
  ],

..

..

 "paths":{

..

..

    "/restapi/v2/accounts/{account_id}": {

     ..

     ..

 }

..

..

}

 

Above for this specific path i dont have the server host name. I get it as workflow progresses in nintex. I have used this OpenApi spec above (not completely shown) in nintex custom connector for docusign. At some point in workflow i retrieve user's baseUrl (required for making calls to user's rest api). This base url is not fixed. I retrieve it and want it to be templated as server in openApi specification i provided above. OpenApi already supports 

Path Templating

 

You can use curly braces {} to mark parts of an URL as path parameters:

 

1. /users/{id}
2. /organizations/{orgId}/members/{memberId}
3. /report.{format}

The API client needs to provide appropriate parameter values when making an API call, such as /users/5 or /users/12.

 

------------------------------------------------------

 

Can same templating be done for servers. I have gone through article overriding server array in openApi swagger spec but its not seems to be useful as it is not templating but is static.

 

Thanks