curl --request POST \
  --url 'https://api.flashcat.cloud/enrichment/mapping/data/upsert?app_key=' \
  --header 'Content-Type: application/json' \
  --data '
{
  "schema_id": "<string>",
  "docs": [
    {}
  ]
}
'

{
  "error": {
    "code": "<string>",
    "message": "<string>"
  }
}