Signs a token update datum in the mempool using additional _POA_ certificates.
## Request Structure
`JSON object:`
```JSON
{
"method": "token_update_sign",
"subcommand": ["token_update_sign"],
"arguments": {
"net": "network_name",
"chain": "chain_name",
"datum": "datum_hash",
"certs": "certs_list"
},
"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`)
**`datum`** - hash of the datum
**`certs`** - list of certificates to sign the datum
### Curl Example
`Request:`
```actionscript
curl --unix-socket /opt/cellframe-node/var/run/node_cli -X POST http://localhost/connect -d '
{
"method": "token_update_sign",
"subcommand": ["token_update_sign"],
"arguments": {
"net": "foobar",
"chain": "main",
"datum": "0x81D0480E5D1EBAC11189AC1E7407DDEF5F2F4ED4596D3D2EB40A53C4DCA85EA5",
"certs": "foobar.root.pvt.0"
},
"id": "1"
}'
```
`Response:`
```json
{
"type": 2,
"result": [
{
"errors": [
{
"code": 0,
"message": "Datum 0x691E6D42AE74AC0844182EAF127A6DEDBD8F12776244C551058DF806ACBD27CF is replacing the 0x81D0480E5D1EBAC11189AC1E7407DDEF5F2F4ED4596D3D2EB40A53C4DCA85EA5 in datum pool"
}
]
}
],
"id": 1
}
```