curl --request POST \
  --url https://{cluster}.cognitedata.com/api/v1/projects/{project}/context/entitymatching/pipelines/byids \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "items": [
    {
      "externalId": "my.known.id"
    }
  ]
}
'

{
  "items": [
    {
      "id": 4503599627370496,
      "createdTime": 1730204346000,
      "sources": {
        "dataSetIds": [
          {
            "externalId": "my.known.id"
          }
        ],
        "resource": "assets"
      },
      "targets": {
        "dataSetIds": [
          {
            "externalId": "my.known.id"
          }
        ],
        "resource": "assets"
      },
      "lastUpdatedTime": 1730204346000,
      "owner": "alice@example.com",
      "externalId": "my.known.id",
      "name": "myPipeline",
      "description": "My pipeline",
      "modelParameters": {
        "featureType": "bigram"
      },
      "trueMatches": [
        {
          "sourceId": 23,
          "targetExternalId": "my.known.id"
        }
      ],
      "confirmedMatches": [
        {
          "sourceId": 23,
          "targetExternalId": "my.known.id"
        }
      ],
      "rejectedMatches": [
        {
          "sourceId": 23,
          "targetExternalId": "my.known.id"
        }
      ],
      "useExistingMatches": false,
      "generateRules": true,
      "replacements": [
        {
          "field": "*",
          "string": "Bottom-hole pressure",
          "replacement": "bhp"
        }
      ],
      "rules": [],
      "rejectedRules": [],
      "scoreThreshold": 0.7,
      "scheduleInterval": 7200,
      "lastRun": {
        "status": "Queued",
        "createdTime": 1730204346000,
        "startTime": 1730204346000,
        "statusTime": 1730204346000,
        "jobId": 123,
        "errorMessage": null
      }
    }
  ]
}