STRATCONN-6298 - [LinkedIn CAPI] - new externalIds field

[joe-ayoub-segment]

Adding new field for LinkedIn CAPI Destination.

Testing

Unit tests added.
Staging testing.

This payload was sent from Staging:

{
  "body": {
    "conversion": "urn:lla:llaPartnerConversion:19865954",
    "conversionHappenedAt": 1760069311909,
    "conversionValue": {
      "amount": "500",
      "currencyCode": "USD"
    },
    "eventId": "dsfds2342e32dwaeadfsd",
    "user": {
      "externalIds": [
        "this_is_an_external_id_1"
      ],
      "userIds": [
        {
          "idType": "SHA256_EMAIL",
          "idValue": "4e87732d3ec74784fdcf77c0e1c76e897916c57c2d44b613b0331d1c558ccb80"
        }
      ],
      "userInfo": {
        "firstName": "Jimmy",
        "lastName": "Joebob"
      }
    }
  },
  "headers": {
    "Accept": "*/*",
    "Accept-Encoding": "gzip,deflate",
    "Authorization": "REDACTED",
    "Content-Length": "401",
    "Content-Type": "application/json",
    "Host": "api.linkedin.com",
    "Linkedin-Version": "202505",
    "User-Agent": "REDACTED",
    "X-Restli-Protocol-Version": "2.0.0"
  }
}

with this 200 response:

{
  "body": "",
  "headers": {
    "Connection": "keep-alive",
    "Content-Length": "0",
    "Date": "Fri, 24 Oct 2025 13:28:52 GMT",
    "Location": "/conversionEvents/com.linkedin.restli.internal.client.ResponseImpl@1e62611b",
    "Nel": "{\"report_to\":\"network-errors\",\"max_age\":1296000,\"success_fraction\":0.00066,\"failure_fraction\":1,\"include_subdomains\":true}",
    "Report-To": "{\"group\":\"network-errors\",\"max_age\":2592000,\"endpoints\":[{\"url\":\"https://www.linkedin.com/li/rep\"}],\"include_subdomains\":true}",
    "Set-Cookie": "bcookie=\"v=2&4f580851-d57f-4af5-8736-a7cd417c3d63\"; domain=.linkedin.com; Path=/; Secure; Expires=Sat, 24-Oct-2026 13:28:52 GMT; SameSite=None; lidc=\"b=OB43:s=O:r=O:a=O:p=O:g=4036:u=587:x=1:i=1761312531:t=1761371766:v=2:sig=AQF_EbK-DpsgxYfB2V5giIMhZAPHcSu1\"",
    "X-Li-Fabric": "prod-lor1",
    "X-Li-Pop": "prod-lor1-x",
    "X-Li-Proto": "http/1.1",
    "X-Li-Route-Key": "\"b=OB43:s=O:r=O:a=O:p=O:g=4036:u=587:x=1:i=1761312531:t=1761371766:v=2:sig=AQF_EbK-DpsgxYfB2V5giIMhZAPHcSu1\"",
    "X-Li-Uuid": "AAZB54fOGzlzRBcByPizfQ==",
    "X-Restli-Id": "com.linkedin.restli.internal.client.ResponseImpl@1e62611b",
    "X-Restli-Protocol-Version": "2.0.0"
  }
}

[codecov]

Codecov Report

❌ Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 79.99%. Comparing base (ce524ca) to head (82a019d).

Files with missing lines	Patch %	Lines
...src/destinations/linkedin-conversions/api/index.ts	50.00%	0 Missing and 1 partial ⚠️

❌ Your patch check has failed because the patch coverage (50.00%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3365      +/-   ##
==========================================
- Coverage   79.99%   79.99%   -0.01%     
==========================================
  Files        1207     1207              
  Lines       22315    22317       +2     
  Branches     4398     4401       +3     
==========================================
+ Hits        17851    17852       +1     
  Misses       3688     3688              
- Partials      776      777       +1     

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