# SigningPayload
SigningPayload is signed by the client with the keypair associated with an AccountIdentifier using the specified SignatureType. SignatureType can be optionally populated if there is a restriction on the signature scheme that can be used to sign the payload.
## Example Usage
```typescript
import { SigningPayload } from "icpmcp-rosetta-api";
let value: SigningPayload = {
accountIdentifier: {
address: "0x3a065000ab4183c6bf581dc1e55a605455fc6d61",
subAccount: {
address: "0x6b175474e89094c44da98b954eedeac495271d0f",
},
},
hexBytes: "<value>",
};
```
## Fields
| Field | Type | Required | Description |
| ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `address` | *string* | :heavy_minus_sign: | [DEPRECATED by `account_identifier` in `v1.4.4`] The network-specific address of the account that should sign the payload. |
| `accountIdentifier` | [models.AccountIdentifier](../models/accountidentifier.md) | :heavy_minus_sign: | The account_identifier uniquely identifies an account within a network. All fields in the account_identifier are utilized to determine this uniqueness (including the metadata field, if populated). |
| `hexBytes` | *string* | :heavy_check_mark: | Hex-encoded string of the payload bytes. |
| `signatureType` | [models.SignatureType](../models/signaturetype.md) | :heavy_minus_sign: | SignatureType is the type of a cryptographic signature. * ecdsa: `r (32-bytes) \|\| s (32-bytes)` - `64 bytes` * ecdsa_recovery: `r (32-bytes) \|\| s (32-bytes) \|\| v (1-byte)` - `65 bytes` * ed25519: `R (32-byte) \|\| s (32-bytes)` - `64 bytes` * schnorr_1: `r (32-bytes) \|\| s (32-bytes)` - `64 bytes` (schnorr signature implemented by Zilliqa where both `r` and `s` are scalars encoded as `32-bytes` values, most significant byte first.) * schnorr_bip340: `r (32-bytes) \|\| s (32-bytes)` - `64 bytes` (sig = (bytes(R) \|\| bytes((k + ed) mod n) where `r` is the `X` coordinate of a point `R` whose `Y` coordinate is even, most significant bytes first.) * schnorr_poseidon: `r (32-bytes) \|\| s (32-bytes)` where s = Hash(1st pk \|\| 2nd pk \|\| r) - `64 bytes` (schnorr signature w/ Poseidon hash function implemented by O(1) Labs where both `r` and `s` are scalars encoded as `32-bytes` values, least significant byte first. https://github.com/CodaProtocol/signer-reference/blob/master/schnorr.ml ) |
