curl --request POST \
  --url https://api.thesearchx.com/{clientId}/datasource/{datasourceId}/recommendation \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "uid": "<unknown>",
  "threshold": 123,
  "limit": 123
}
'

{
  "success": true,
  "results": [
    {
      "_score": 123,
      "ttmId": "<string>",
      "...other properties...": "<unknown>"
    }
  ]
}