curl --location --request POST 'http://localhost/api/v1/tenant/billing/addons' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data-raw '{
"feature_key": "string",
"name": "string",
"code": "string",
"billing_mode": "recurring",
"quantity": 1,
"unit_price": 0,
"unit_value": "string",
"starts_at": "2019-08-24T14:15:22.123Z",
"ends_at": "2019-08-24T14:15:22.123Z",
"metadata": [
"string"
]
}'"string"