Create a policy

const policy = await privy.policies().create({
  name: 'Allow list certain smart contracts',
  version: '1.0',
  chain_type: 'ethereum',
  rules: [
    {
      name: 'Allow list USDC',
      method: 'eth_sendTransaction',
      action: 'ALLOW',
      conditions: [
        {
          field_source: 'ethereum_transaction',
          field: 'to',
          operator: 'eq',
          value: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
        }
      ]
    }
  ],
  owner_id: 'fmfdj6yqly31huorjqzq38zc'
});