curl --request POST \
  --url http://localhost:3001/api/admin/broadcasts/execute \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "workspaceId": "<string>",
  "broadcastName": "<string>",
  "segmentDefinition": {
    "entryNode": {
      "id": "<string>",
      "path": "<string>",
      "operator": {
        "windowSeconds": 123
      }
    },
    "nodes": [
      {
        "id": "<string>",
        "path": "<string>",
        "operator": {
          "windowSeconds": 123
        }
      }
    ]
  },
  "messageTemplateDefinition": {
    "title": "<string>",
    "body": "<string>",
    "imageUrl": "<string>"
  },
  "subscriptionGroupId": "<string>"
}
'

{
  "broadcastName": "<string>",
  "broadcastId": "<string>"
}