Our website has a few clusters, Amsterdam and 3 Airports. Each page has scripts for TravelActions, like

<script type="application/ld+json">
{
"@context": "https://schema.org",
"@graph": [
{
"@type": "TravelAction",
"agent": {
"@type": "TaxiService",
"name": "ClubTaxi",
"offers": [
{
"@type": "Offer",
"name": "Regular Taxi",
"price": 265,
"priceCurrency": "EUR"
},
********************************
"fromLocation": {
"@type": "City",
"name": "Groningen"
},
"toLocation": {
"@type": "AdministrativeArea",
"name": "Amsterdam Centrum"
}
}
]
}
</script> 

To SEO per Cluster I need to ad a script like:

<script type="application/ld+json">
{
"@context": "https://schema.org",
"@type": "TaxiService",
"name": "ClubTaxi",
"url": "https://www.clubtaxi.nl",
"areaServed": {
************************************************
},
"description": "ClubTaxi biedt taxivervoer tegen een vast tarief naar Amsterdam vanaf iedere locatie in Nederland."
}
</script>

Would be nice when that part of SEO could be done per layer, instead of copy paste to every single page of that cluster.