Payment with 3-D Secure

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    { "id":"otp","type":"diamond","label":"3DS challenge","x":820,"y":145,"fill":"#fef3c7","stroke":"#a16207" },
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    { "id":"no","type":"ellipse","label":"Decline","x":1040,"y":240,"fill":"#fee2e2","stroke":"#b91c1c" },
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    { "id":"d","source":"bk","target":"otp" },
    { "id":"e","source":"otp","target":"ok","label":"pass" },
    { "id":"f","source":"otp","target":"no","label":"fail" },
    { "id":"g","source":"ok","target":"cap" }
  ]
}