POST https://datastore.googleapis.com/v1/projects/try-datastore-142407:runQuery?key={YOUR_API_KEY}
{
 "gqlQuery": {
  "queryString": "SELECT * FROM Task"
 }
}

cache-control:  private
content-encoding:  gzip
content-length:  459
content-type:  application/json; charset=UTF-8
date:  Tue, 06 Sep 2016 03:29:52 GMT
server:  ESF
vary:  Origin, X-Origin, Referer
{
 "batch": {
  "entityResultType": "FULL",
  "entityResults": [
   {
    "entity": {
     "key": {
      "partitionId": {
       "projectId": "try-datastore-142407"
      },
      "path": [
       {
        "kind": "Task",
        "id": "5629499534213120"
       }
      ]
     },
     "properties": {
      "description": {
       "stringValue": "datastore test!!",
       "excludeFromIndexes": true
      },
      "done": {
       "booleanValue": false
      },
      "created": {
       "timestampValue": "2016-09-06T02:45:07.468Z"
      }
     }
    },
    "cursor": "CjESK2oWc350cnktZGF0YXN0b3JlLTE0MjQwN3IRCxIEVGFzaxiAgICAgICACgwYACAA",
    "version": "1473129925742000"
   }
  ],
  "endCursor": "CjESK2oWc350cnktZGF0YXN0b3JlLTE0MjQwN3IRCxIEVGFzaxiAgICAgICACgwYACAA",
  "moreResults": "NO_MORE_RESULTS"
 },
 "query": {
  "kind": [
   {
    "name": "Task"
   }
  ]
 }
}