Hello, yes you can.
Your JSON should look like this:
{
"array": [
{
"ID": "t",
"name": "User t",
"objCode": "GROUP",
"owners": [
{
"ID": "tt",
"name": "User",
"objCode": "USER"
}
]
},
{
"ID": "tes",
"name": "Group",
"objCode": "GROUP",
"owners": [
{
"ID": "tested",
"name": "User",
"objCode": "USER"
}
]
}
]
}
Then, in the webhook, you will see it as a single item with an array inside.

However, if you send the JSON in this format:
[
{
"ID": "t",
"name": "User t",
"objCode": "GROUP",
"owners": [
{
"ID": "tt",
"name": "User",
"objCode": "USER"
}
]
},
{
"ID": "tes",
"name": "Group",
"objCode": "GROUP",
"owners": [
{
"ID": "tested",
"name": "User",
"objCode": "USER"
}
]
}
]
Then it will create a bundle for each item, instead of one item containing the array.