curl --request POST \
  --url https://backstage.example.com/api/soundcheck/campaigns/entities \
  --header 'Content-Type: application/json' \
  --data '
{
  "campaignId": "<string>",
  "campaignName": "<string>",
  "checkId": "<string>",
  "checkName": "<string>",
  "checkStates": [],
  "entityFilter": {},
  "entityFields": [
    "<string>"
  ],
  "metadataAnnotations": [
    "<string>"
  ],
  "first": 123,
  "after": "<string>"
}
'

{
  "totalCount": 123,
  "pageInfo": {
    "hasNextPage": true,
    "hasPreviousPage": true,
    "startCursor": "<string>",
    "endCursor": "<string>"
  },
  "edges": [
    {
      "node": {
        "entityRef": "<string>",
        "certified": true,
        "checkStates": [
          {
            "checkId": "<string>",
            "checkName": "<string>"
          }
        ],
        "entity": {}
      }
    }
  ]
}