For authentication API call, use 'content_type: application/x-www-form-urlencoded' as header. Сall to obtain access token should work ok then.
Why do I get 'Bad Request' response while creating an OAuth bearer token to make 'send on behalf' of calls?
- Is there any workaround for the case when Safari does not allow third party sites to open in an iframe without already having a cookie for that site stored?
- Can I exclude a signer from receiving the completed/signed email?
- Is it possible to have more than one signNow account with the same email address?