{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306102391",
    "entityType": "User",
    "nonce": "0xff28b88e6f42931cbb4e032e7e9788af5689063daa79662ed9056798f53c29e1",
    "signature": "0xb2c103ab668999c898d519ce373b95882d821e90d85b937efbc5c4662f69567e187a53311857acaf65bb2a9333a84d7233a9c41f45d1f19ea6e6d8c5c65279941b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}