selector = {
      'searchParameters': [
    {'xsi_type': 'RelatedToQuerySearchParameter',
      'queries': ["spaceships"]},
    {'xsi_type': 'RelatedToUrlSearchParameter',
      'urls': ["www.cnn.com"]},
    {'xsi_type': 'LocationSearchParameter',
      'locations': [2840]},
    ],
      'ideaType': 'PLACEMENT',
      'requestType': 'IDEAS',
      'requestedAttributeTypes': ['PLACEMENT_NAME'],
      'paging': {
      'startIndex': str(0),
      'numberResults': str(800)
      }
  }