curl --request GET \
  --url https://api.example.com/connections/{connectionId} \
  --header 'Authorization: Bearer <token>'

{
  "connection": {
    "authMetadata": {
      "NoAuthMetadata": {}
    },
    "updatedAt": "<string>",
    "integrationId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "projectId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "integrationUserId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "customMetadata": {},
    "createdAt": "<string>"
  }
}