Httpie request

$ echo '{
  "cand_set_size" : 1000,
  "fields_to_return" : [ "_id" ],
  "radius" : 5.0,
  "records" : [ {
    "_id" : "1",
    "_url" : "http://mydomain.com/img.png"
  }, {
    "_base64" : "data:image/png;base64,ABC...",
    "_id" : "2"
  }, {
    "_id" : "3",
    "_url" : "http://mydomain.com/another_image.jpg"
  } ]
}' | http POST 'https://api.ximilar.com/photo/search/v2/nearDupsInsert' \
    'Content-Type:application/json;charset=UTF-8' \
    'collection-id:mycoll_id' \
    'Authorization:Token 1af538baa90-----XXX-----baf83ff24'