IIS Server : Received error code 413 when posting large data in the request

I hosted WebAPI on the IIS which is written in laravel. I have one request size of 60 MB. I am trying to send this data to the server but receiving 413 errors - "Request Entity Too Large".

I updated php.ini and set the below value

• max_execution_time = 6000
• upload_max_filesize = 1512M
• max_input_vars = 5000
• post_max_size = 1024M

I also updated uploadReadAheadSize of the IIS Server and set "80485760"

Edit

After updating php.ini and server config, I restarted the server.

You can try below settings:

<system.web>
  <httpRuntime maxRequestLength="1048576" />
</system.web>
<system.webServer>
  <security>
    <requestFiltering>
      <requestLimits maxAllowedContentLength="1073741824" /> 
    </requestFiltering>
  </security>
</system.webServer>