paymentData.toJson()

{
  "apiVersionMinor": 0,
  "apiVersion": 2,
  "paymentMethodData": {
    "description": "Mastercard •••• 4803",
    "tokenizationData": {
      "type": "PAYMENT_GATEWAY",
      "token": "{\"signature\":\"MEUCIQCdAOx5wn2x5aIcw3nYkpJEuoJ64+22JkDtDCI8y8dCygIgVN/D2qqhNGa/HrqeOomerosh2XzbFfDhNPHqYHG2/YQ\\u003d\",\"protocolVersion\":\"ECv1\",\"signedMessage\":\"{\\\"encryptedMessage\\\":\\\"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\\\\u003d\\\\u003d\\\",\\\"ephemeralPublicKey\\\":\\\"BEU2eBZniLxc6qiMTm4R0VVqPJpGarQQ1CCWBhDuu4DvD1zemRY8ZA7w4Okcf6pC7QoQAViDIeHSd3eLiI1yXj4\\\\u003d\\\",\\\"tag\\\":\\\"DrAofWqE3fHZqIcI2sWlYEA42qC6kF8YIG8+2BdLDWs\\\\u003d\\\"}\"}"
    },
    "type": "CARD",
    "info": {
      "cardNetwork": "MASTERCARD",
      "cardDetails": "4803",
      "billingAddress": {
        ...
      }
    }
  }
}