> curl --data @- -X POST --dump - http://localhost:8529/_api/index?collection=105981200
{ "type" : "hash", "unique" : false, "fields" : [ "a", "b" ] }

HTTP/1.1 201 Created
content-type: application/json

{
  "code": 201,
  "fields": [
    "a",
    "b"
  ],
  "id": "105981200/171069625",
  "type": "hash",
  "isNewlyCreated": true,
  "unique": false,
  "error": false
}