> ## Documentation Index
> Fetch the complete documentation index at: https://developers.fireblocks.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Raw Signing Objects

## RawMessageData

| Parameter | Type | Description |
| - | - | - |
| messages | array of [UnsignedRawMessage](#unsignedrawmessage) objects | The messages that should be signed |
| algorithm | string | \[optional] The algorithm which will be used to sign the transaction, one of the [SigningAlgorithms](/reference/vault-objects#signingalgorithm) |

***

## SignedMessage

| Parameter | Type | Description |
| - | - | - |
| content | string/object | The content that was sent to be signed.  For RAW signing - the message for signing (hex-formatted).  For EIP712 Typed Message signing - the object (payload) for signing. |
| algorithm | string | The algorithm that was used for signing, one of the [SigningAlgorithms](/reference/vault-objects#signingalgorithm) |
| derivationPath | Array of numbers | [BIP32](https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki) derivation path of the signing key. E.g. |
| signature | dictionary | The message signature |
| publicKey | string | The signature's public key is used for verification. |

***

## UnsignedRawMessage

| Parameter | Type | Description |
| - | - | - |
| content | string | The message to be signed in hex format encoding |
| bip44AddressIndex | number | RawMess [BIP44](https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki) address\_index path level |
| bip44change | number | RawMess [BIP44](https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki) change path level |
| | The 2 fields above complement the derivation path given the source id and asset were provided in the transaction body request. | |
| | In case none of the above was provided, please specify the derivation path. | |
| derivationPath | array of numbers | RawMess Should be passed only if asset and source were not specified.   - **Note:** for Testnet assets, `coin_type` is always '1'. |
| type | string | RawMess Should be passed only if `operation` is `TYPED_MESSAGE`. Possible values are:   - `EIP191`: for ETH/EVM personal messages - `EIP712`: For ETH/EVM typed messages - `TIP191`: For TRX personal messages - `BTC_MESSAGE`: For BTC personal messages |
| preHash | [PreHash object](/reference/raw-signing-objects#prehash) | An object to send (described below) when creating ECDSA Raw signing requests in cold wallet workspaces.  **Required in Cold Wallet workspaces only. Regular Fireblocks workspaces do not require this object to be sent.** |

## PreHash

| Parameter | Type | Description |
| - | - | - |
| content | string | The pre-hashed content in hexadecimal representation. |
| hashAlgorithm | string | The hashing algorithm to apply to the provided content.  Possible values:   - SHA256 - KECCAK256 - BLAKE2 - SHA3 - DOUBLE\_SHA256 |