Sending json api object using mail manager

I am using the JSONAPI spec http://jsonapi.org/format/#status

And I have data as below,

{
  "data": 
    {
    "type": "tag",
    "id": "1",
    "attributes": {
        "name": "Test"
    }
  }
}

      

        
        
        
      

    

How do I make a post request to an endpoint using the chrome postman extension?

I am trying to make a call, but I cannot get the parameters.

obs. I have already set my Content-Type asapplication/vnd.api+json

Thank!