curl --request POST \
  --url https://app.gaintrace.com/api/v1/signals/batch \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "data": [
    {
      "accountId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "title": "<string>",
      "description": "<string>",
      "metadata": {}
    }
  ]
}
'

{
  "data": [
    {
      "index": 123,
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "error": "<string>"
    }
  ],
  "meta": {
    "received": 123,
    "succeeded": 123,
    "failed": 123
  }
}