Start connecting a Cashfree, Razorpay or Stripe account

Returns the gateway's consent URL. It must be opened in a browser signed in to chatform as the user who created this key; the state is single-use and expires in ten minutes. `returnTo` must be a page on the chatform app.

curl -X POST "https://example.com/v1/payment-accounts/oauth/string/start" \  -H "Content-Type: application/json" \  -d '{    "returnTo": "string"  }'

{  "url": "string"}