{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "423",
    "entityType": "User",
    "nonce": "0x67015b007ef0ed005e4feb9cc274dd11bd334d3dc38cba71d167f7f1e62671e0",
    "signature": "0x48c40b0a543af4c5f3584fb436374f383cb9b40a64748ae9bc41b40d276665914044c47109e645b63efeb70501a1c5cfbcd7caeff3a1b50393582217f726a1541c",
    "signer": "0xe23f94433EED8958AAF9868141BA976B8fffb969",
    "userId": "307915745"
  }
}