# ProposalApprove

**Body params**: 

* `owner_address` - Approver address
* `proposal_id` - Proposal ID
* `is_add_approval` - Approved
* `truefalsepermission_id` - Optional, for multi-signature use
* `visible` - Optional.Whehter the address is in base58 format.

**Request**

```
curl --request POST \
     --url https://tron.api.watchdata.io/wallet/proposalapprove \
     --header 'Accept: application/json' \
     --header 'Content-Type: application/json' \
     --data '
{
     "owner_address": "string",
     "proposal_id": 0,
     "is_add_approval": true,
     "permission_id": 0,
     "visible": true
}
'
```

**Response** 

```
{
  "Error": "class java.lang.NullPointerException : null"
}
```