| Name | Type | Description | Notes |
|---|---|---|---|
| customer | String | A unique 25-character alphanumeric resource identifier. | [default to null] |
| amount | Integer | Amount greater than or equal to 0, in the lowest denomination of the currency (e.g. cents for USD). | [default to null] |
| currency | Currency | [default to null] | |
| period | SubscriptionPeriod | [default to null] | |
| metadata | Object | Store any additional data you want to associate with the subscription. The object's keys and values must be strings. Keys have a maximum length of 30 characters. Values have a maximum length of 2000 characters. | [optional] [default to null] |