Create a policy

const policy = await privy.policies().create({
  name: 'Allow list certain smart contracts',
  version: '1.0',
  chain_type: 'ethereum',
  rules: [
    {
      name: 'Allowlist OUSD',
      method: 'eth_sendTransaction',
      action: 'ALLOW',
      conditions: [
        {
          field_source: 'ethereum_transaction',
          field: 'to',
          operator: 'eq',
          value: '0x20c0000000000000000000006a37da5c996874be'
        }
      ]
    }
  ],
  owner_id: 'fmfdj6yqly31huorjqzq38zc'
});