Function rest_state_signature_service_get_state_signature 

async fn rest_state_signature_service_get_state_signature<S>(
    __arg0: State<Arc<S>>,
    headers: HeaderMap,
    __arg2: Query<GetStateSignatureRequest>,
) -> Result<Json<StateSignatureResponse>, RestError>
where
    S: StateSignatureService + Send + Sync + 'static,

GetStateSignature - JSON endpoint.

GET /v2/state-signature/block