In the amended ERC-7715 standard, accountMeta has been replaced with dependencies.

SendUseroperationWithDelegation still references the old accountMeta.

Note: this isn't a problem presently for MetaMask extension use case, as this never returns dependencies.

The standard defines the response schema as:

type PermissionResponse = PermissionRequest & {
  context: Hex;
  dependencies: {
    factory: `0x${string}`;
    factoryData: `0x${string}`;
  }[];
  delegationManager: `0x${string}`;
};

Where dependencies is an array of factoryData that must be executed on the factory address.