Adds sign to event in the `round.new`.
Hash doesn't include other signs so event hash doesn't change upon adding signature.
## Request Structure
`JSON object:`
```JSON
{
"method": "dag",
"subcommand": ["event","sign"],
"arguments": {
"net": "network_name",
"chain": "chain_name",
"event": "event_hash",
"cert": "priv_cert_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]]
**`chain`** - the name of chain (`main` or `zerochain`)
**`event`** - hash of the event
**`cert`** - name of the private *root* certificate
If you make a request in the Cellframe network, use parameter `chain:zerochain`.
## Request Structure
`JSON object:`
```actionscript
curl --unix-socket /opt/cellframe-node/var/run/node_cli -X POST http://localhost/connect -d '
{
"method": "dag",
"subcommand": ["event","sign"],
"arguments": {
"net": "foobar",
"chain": "zerochain",
"event": "0x43F9AAF6C632377DBC2E531FE7A706D51B574D6DB239B268F8DB566FB71E91A1 ",
"cert": "foobar.root.pvt.1"
},
"id": "1"
}'
```
`Response:`
```json
{
"type": 0,
"result": "Added new sign with cert \"foobar.root.pvt.1\", event 0x28B95D8E082CCD1D80CFBDE1499D4797F3C7889F4C56F5478EBD40B47561119C placed back in round.new\n",
"errors": null,
"id": 1
}
```