github.com/prebid/prebid-server/v2@v2.18.0/endpoints/openrtb2/sample-requests/invalid-native/empty-object.json (about)

     1  {
     2    "description": "Bid request with an empty native.request field in its only imp element",
     3    "mockBidRequest": {
     4      "id": "req-id",
     5      "site": {
     6        "page": "some.page.com"
     7      },
     8      "tmax": 500,
     9      "imp": [
    10        {
    11          "id": "some-imp",
    12          "native": {
    13            "request": "{}"
    14          },
    15          "ext": {
    16            "appnexus": {
    17              "placementId": 12883451
    18            }
    19          }
    20        }
    21      ]
    22    },
    23    "expectedReturnCode": 400,
    24    "expectedErrorMessage": "Invalid request: request.imp[0].native.request.assets must be an array containing at least one object"
    25  }