{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6fd9036cb053c4f5d46c0276884ed78b49df3a83cb5e9d8dd7672617e63c3456",
    "signature": "0xcf1b17091411d72f62672c3bcc45260ce3be065949e8aba0ab5832409cd7949c35aee3bca645de8632f635cdb4e9661e2de8a60e021c7a07873eb4fb7099c9bf1c",
    "signer": "0x8Bb8fa95906668B2302B27e50860464EDe04Eb74",
    "userId": "213476781"
  }
}