# `Stripe.Params.AccountUpdateParams.Documents.ProofOfUltimateBeneficialOwnership.Signer`
[🔗](https://github.com/jeffhuen/tiger_stripe/blob/main/lib/stripe/params/account_update_params.ex#L1481)

Nested parameters.

# `t`

```elixir
@type t() ::
  %Stripe.Params.AccountUpdateParams.Documents.ProofOfUltimateBeneficialOwnership.Signer{
    person: String.t() | nil
  }
```

* `person` - The token of the person signing the document, if applicable. Max length: 5000.

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*Consult [api-reference.md](api-reference.md) for complete listing*