message: hub: Update SKU for mainnet card drop
diff: "callbackUrl": "https://hub.cardstack.com/callbacks/wyre"
  },
  "cardDrop": {
  - "sku": "0xa749b13a8b8a0ee736e3dde0a1a02658bc1cad6641d50849009a707ace79ce17",
  + "sku": "0x81225830f5bfadbe142da2e9175e9fd52b01806e636c84299bcd8d1aae7dea8b",
  "verificationUrl": "https://hub.cardstack.com/email-card-drop/verify"
  }
  }
  