curl --request POST \
  --url https://api.flare.io/firework/v2/assets/groups/ \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "feed_id": 123,
  "feed_owner_id": 123,
  "id": 123,
  "name": "<string>",
  "tenant_id": 123,
  "urn": "<string>"
}'

{
  "assets_group": {
    "feed_id": 123,
    "feed_owner_id": 123,
    "id": 123,
    "name": "<string>",
    "tenant_id": 123,
    "urn": "<string>"
  }
}