{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9f2fa6ed8f6a4eb4f920c710f4ea9112b11b9a4291b8d39cfd85b8f206760ed1",
    "signature": "0x5bb244223620580f6463a1908eec2a9fb3c47871c176d56857428d2cb8d0ac4e3f91df4b99b66fed62cad9c0089ca1bb2c960cc04b1507dae87c589617e84d3e1c",
    "signer": "0x102c00C6f01330D03845E623CCFeA4857cF0259f",
    "userId": "580850928"
  }
}