curl --request GET \
  --url https://api.vantage.sh/v2/budget_alerts \
  --header 'Authorization: Bearer <token>'

{
  "links": {},
  "budget_alerts": [
    {
      "token": "<string>",
      "budget_tokens": [
        ""
      ],
      "created_at": "2024-03-19T00:00:00Z",
      "workspace_token": "<string>",
      "user_token": "<string>",
      "user_tokens": [
        ""
      ],
      "duration_in_days": "<string>",
      "threshold": "75",
      "period_to_track": "start_of_the_month",
      "integration_provider": "slack",
      "recipient_channels": ""
    }
  ]
}