List all the modifiers
Optionally, the query accepts the parameter
plan_id with the value of a Plan/Product ID, to list all the subscriptions modifiers of a certain plan. It also accepts
subscription_id to get modifiers applied to a specific subscription plan.
The vendor ID identifies your seller account. This can be found in Developer Tools > Authentication.
The vendor auth code is a private API key for authenticating API requests. This key should never be used in client side code or shared publicly. This can be found in Developer Tools > Authentication.
Filter: Modifiers for a specific subscription.
Filter: The product/plan ID
An unsuccessful call to the Dashboard API will return a 200 response containing a field
success set to
false and an error object.