Line `@payment = JSON.parse(json,object_class: OpenStruct)` returns this error: `*** TypeError Exception: no implicit conversion of Hash into String` I copied the webhooks json directly from Stripe, so my format is json = { "data": { "object": { "id": "blahblah", "object": "checkout.session", ... Update: If I wrap the entire json block in '' to create a string it _seems_ to work.