Create an ephemeral (short-term, limited-scope) access token for interacting with a card via Synctera widgets.
An idempotency key is an arbitrary unique value generated by client to detect subsequent retries of the same request. It is recommended that a UUID or a similar random identifier be used as an idempotency key. A different key must be used for each request, unless it is a retry.
"7d943c51-e4ff-4e57-9558-08cab6b963c7"
Card ID
"6dc0397d-1aba-4be9-9582-895a7a887d49"
SET_PIN, GET_PIN, ACTIVATE, REVEAL