Sign a transaction

    do {
        let params = OFSendSignatureTransactionIntentRequestParams(
            transactionIntentId: transactionIntentId,
            signableHash: userOperationHash,
            signature: signature,
            optimistic: false
        )
        let result = try await OFSDK.shared.sendSignatureTransactionIntentRequest(params: params)
    } catch {
        print("\(error)")
    }

struct OFSendSignatureTransactionIntentRequestParams: OFCodableSendable {
    public let transactionIntentId: String
    public let signableHash: String?
    public let signature: String?
    public let optimistic: Bool?
}

struct OFTransactionIntentResponse: OFCodableSendable, OFTransactionIntentResponseProtocol {
    public let id: String
    public let object: String           // "transactionIntent"
    public let createdAt: Int
    public let updatedAt: Int
    public let abstractionType: OFTransactionAbstractionType
    public let details: OFTransactionDetails?
    public let chainId: Int
    public let response: OFResponseResponse?
    public let interactions: [OFInteraction]?
    public let nextAction: OFNextActionResponse?
    public let policy: OFPolicyOrEntity?
    public let player: OFPlayerOrEntity?
    public let account: OFAccountOrEntity?
}

{
    method: method,
    success: false,
    error: error
}