Errors to JSON validation

[prashant7july]

As per below code I am validate JSON data but it giving me the error
var filter = [{api_access: 'json', social_parameters: 'json', social_data: 'json'}];

req.validator(filter, false, function(err, params){
// err === {message: 'parsedError...', invalidParameters: ['invalid', 'parameter', 'list']}
if(err) return res.badRequest({'error':err.message});
});

The response is
{
"error": " api_access: [object Object], has to be json type. social_parameters: [object Object], has to be json type. social_data: [object Object], has to be json type."
}

The Model in sails.js with waterLine ORM
module.exports = {
attributes: {
api_access:{
type: 'json',
required: true
},
social_parameters:{
type: 'json',
required: true
},
social_data: {
type: 'json',
required: true
},
}
}

The Postman Collection sending with Post Data

{
  "api_access":{
    "key":"XXXXXXXXXX",
    "pwd":"XXXXXXXXXXX"
  },
  "social_parameters":{    
    "access_token":"8eZWROguE3Bt3OmA2SRugfYD"
  },
  "social_data":{
    "message":"XXXXX",
    "name":"xxxxxxxx",
    "link":"xxxxxxxxx",
    "picture": "XXXXX",
    "description" : "XXXXX",
    "page_id":"XXXXXXXXXXXXX"
  }
}