Enables or disables checks for blocks signs structure validity.
## Request Structure
`JSON object:`
```JSON
{
"method": "esbocs",
"subcommand": ["check_signs_structure", "enable | disable"],
"arguments": {
"net": "network_name",
"cert": "poa_cert_name",
"chain": "chain_name"
},
"id": "1"
}
```
`Parameters:`
**`net (network_name)`** - name of the Cellframe Network. The list of networks can be found in the `<Config_dir> \ etc \ network` folder or received using - [[Node Command - NET LIST]]
**`cert`** - name of the root node certificate
**`chain`** - name of the chain `optional`
### Curl Example
`Request:`
```actionscript
curl --unix-socket /opt/cellframe-node/var/run/node_cli -X POST http://localhost/connect -d '{
"method": "esbocs",
"subcommand": ["check_signs_structure","enable"],
"arguments": {
"net": "riemann",
"cert": "riemann.root.pvt.0"
},
"id": "1"
}'
```
`Response:`
```json
{
"type": 2,
"result": [
{
"Checking signs structure has been": "enabled",
"Decree hash": "0x07787EE238D182EC7FC4BDD642AC74B41BBAF564A73702FD37C12D753BB4776F"
}
],
"errors": null,
"id": 1
}
```