post data with request.js

createZendeskTicket.js

var request = require("request");

/**
curl https://{subdomain}.zendesk.com/api/v2/tickets.json \
  -d '{"ticket": {"subject": "My printer is on fire!", "comment": { "body": "The smoke is very colorful." }}}' \
  -H "Content-Type: application/json" -v -u {email_address}:{password} -X POST
*/
var options = {
  url: "https://{subdomain}.zendesk.com/api/v2/tickets.json",
  method: "POST",
  headers: {
    "Content-Type": "application/json"
  },
  auth: {
    user: "{email}/token",
    pass: "{token}"
  },
  json: true,
  body: {
    "ticket": {
      "subject": "subject",
      "description": "description",
      "custom_fields": [{
        "id": 28446177,
        "value": 'AAAA'
      }, {
        id: 28937178,
        "value": "category2"
      }]
    }
  }
};

request(options, function(error, response, body) {
    if (error) {
        console.log(error);
    } else {
        console.log(body);
    }
});

if request.js options.json is not true or not exist, will throw execption, another way tp pass this is to stringify your body with JSON.stringify