400 Parser error with Google API POST call - json

Question

I am trying to make POST call towards Search Console API. I got my example running under API Explorer, however when I try to make the same call from my meteor project, I am getting error:
Object {error: Object} error: Object code: 400 errors: Array[1]
message: "Parse Error"
My code:
function fetchSEOForWebsite(website) {
var call = 'webmasters/v3/sites/' + 'mdbootstrap.com' + '/searchAnalytics/query'
var params = {
"searchType": "web",
"dimensions": [
"query",
"date",
"page"
],
"startDate": "2016-02-06",
"endDate": "2016-02-08"
}
GoogleApi.post(call, {
params: params
}, function(error, answer) {
console.log(answer);
});
}
From Chrome console I can see POST payload:
searchType=web&dimensions=query%2Cdate%2Cpage&startDate=2016-02-06&endDate=2016-02-08
The same query works perfectly fine from API Explorer :
POST https://www.googleapis.com/webmasters/v3/sites/http%3A%2F%2Fmdbootstrap.com/searchAnalytics/query?key={YOUR_API_KEY}
{
"searchType": "web",
"dimensions": [
"query",
"date",
"page"
],
"startDate": "2016-02-06",
"endDate": "2016-02-08"
}
What am I doing wrong?
I am using Meteor Google Api
https://github.com/percolatestudio/meteor-google-api
UPDATE:
I also checked paylod sent via API Explorer and it's different:
{ "searchType": "web", "dimensions": ["query","date","page"
], "startDate": "2016-02-06", "endDate": "2016-02-08" }
So it looks like for some reason my params are not passed as a JSON object to call...

Answer 1

From percolate:google-api package Readme
GoogleApi is a Google OAuth authentication wrapper around HTTP, so it
takes the same arguments. For example, to pass a JSON body in
GoogleApi.post, use:
GoogleApi.post('/your/api/path', { data: jsonBody });
So I would try with data: instead of params: