curl --request PATCH \
  --url https://{defaultHost}/v1/affiliation_products/{id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "affiliation_product": {
    "commission_structure": {
      "percent_commission": 33.33
    }
  }
}
'

{
  "id": "33f0cabf-5dae-41e8-b71b-fc8d45c6cdeb",
  "object": "affiliation_product",
  "affiliation": "deabbae2-3995-43dd-b01e-2b16cf691597",
  "product": "8854cbd7-780f-4b71-8803-aa9fb0ade94d",
  "commission_structure": "2d02eec4-5e59-4064-88b9-48aac41e2bd4",
  "created_at": 1773903525,
  "updated_at": 1773903525
}