curl --request POST \
  --url 'https://api.flashcat.cloud/datasource/im/person/try-link?app_key=' \
  --header 'Content-Type: application/json' \
  --data '
{
  "integration_id": 6113996590131
}
'

{
  "request_id": "01HK8XQE3Z7JM2NTFQ5YJ8P9R4",
  "data": {
    "new_linked_person_ids": [
      5348648172131
    ]
  }
}