curl https://production.methodfi.com/accounts/acc_yVf3mkzbhz9tj/verification_sessions/avf_DjkdemgTQfqRD \
  -X PUT \
  -H "Method-Version: 2026-03-30" \
  -H "Authorization: Bearer sk_WyZEWVfTcH7GqmPzUPk65Vjc" \
  -H "Content-Type: application/json" \
  -d '{
    "mx": {
      "account" : {
        "institution_code": "chase",
        "guid": "ACT-06d7f44b-caae-0f6e-1384-01f52e75dcb1",
        "account_number": null,
        "apr": null,
        "apy": null,
        "available_balance": 1000.23,
        "available_credit": null,
        "balance": 1000.23,
        "cash_balance": 1000.32,
        "cash_surrender_value": 1000.23,
        "created_at": "2016-10-13T17:57:37+00:00",
        ...
      },
      "transactions": [
        ...
      ]
  }'

const response = await method
  .accounts('acc_yVf3mkzbhz9tj')
  .verificationSessions
  .update('avf_DjkdemgTQfqRD', {
    mx: {
      account: {
        institution_code: 'chase',
        guid: 'ACT-06d7f44b-caae-0f6e-1384-01f52e75dcb1',
        account_number: null,
        apr: null,
        apy: null,
        available_balance: 1000.23,
        available_credit: null,
        balance: 1000.23,
        cash_balance: 1000.32,
        cash_surrender_value: 1000.23,
        created_at: '2016-10-13T17:57:37+00:00',
        ...
      },
      transactions: [
        ...
      ]
    }
  });

response = method
  .accounts('acc_yVf3mkzbhz9tj')
  .verification_sessions
  .update('avf_DjkdemgTQfqRD', {
    'mx': {
      'account': {
        'institution_code': 'chase',
        'guid': 'ACT-06d7f44b-caae-0f6e-1384-01f52e75dcb1',
        'account_number': None,
        'apr': None,
        'apy': None,
        'available_balance': 1000.23,
        'available_credit': None,
        'balance': 1000.23,
        'cash_balance': 1000.32,
        'cash_surrender_value': 1000.23,
        'created_at': '2016-10-13T17:57:37+00:00',
        ...
      },
      'transactions': [
        ...
      ]
    }
  })