Asset Creation via API with configuration

We are trying to create an asset via API in Oracle CPQ.

We are successful in creating the asset via API. However, there is a problem in storing the existing configuration of the created asset.

We have tried passing in the "attributes" key of the payload. It's getting consumed and was able to see in the subscription workbench. But looks like it's not the config BOM attributes that drives the configurator.

sample payload:

{

 "assetKey": "abo_4",

 "attributes": {"country":"Japan","city":"Tokyo"},

 "billingAccount": "test",

 "displayKey": "API-1-SOLUTION",

 "billingProfile": "test",

 "bomItemId": "BOM_Test Solution",

 "contractReference": "string",

 "siebelPartMaster_c":"this is a test",

 "currency": {