[Python] I need to create a compound primary key in a GridDB Cloud collection container

I´m trying to create a table (collection container) using GridDB Cloud, using a Python script, as shown in GridDB Developers Quick Start Guide, available at https://griddb.net/en/blog/griddb-cloud-quick-start-guide/. The script runs fine, but the primary key is always created on the first column (Order_ID). However, I´d like the primary key to be based on both Order_ID and Product_ID columns. Any ideas on how to accomplish that? The Python script that drops and creates the table is shown below:

#CreateOrderDetailsTable.py
import requests
import json

# Set table name
tableName = "OrderDetails"

# URL and authentication
url = "https://cloud5197.griddb.com:443/griddb/v2/gs_clustermfcloud****/dbs/******/containers"

headers = {
'Content-Type': 'application/json',
'Authorization': 'Basic *********************',
'User-Agent': 'PostmanRuntime/7.29.0'
}

# If table exists, drop it...
payload = json.dumps([
tableName
])
response = requests.request("DELETE", url, headers=headers, data=payload)
print("Drop table result: ", response.status_code)

# Create table
payload = json.dumps({
"container_name": tableName,
"container_type": "COLLECTION",
"rowkey": True,
"columns": [
{
"name": "Order_ID",
"type": "INTEGER",

},
{
"name": "Product_ID",
"type": "INTEGER",

},
{
"name": "Quantity",
"type": "INTEGER",
},
{
"name": "Price",
"type": "FLOAT"
}
]
})
response = requests.request("POST", url, headers=headers, data=payload)
print("Create table result: ", response.status_code)

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