{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "766293353",
    "entityType": "User",
    "nonce": "0x9904c855e846a9f12c50dd9ed83e1a5d638899476990fd7b4e7c438f1e294af4",
    "signature": "0x4b467e63af19962fc2a31436a6c6a86682b82080b7b05f3fed8bf8b31823ace67b35b78c1d346977f8a76e184e0e6bec1444bf2b9d347c611a5574c6313a60811b",
    "signer": "0x405A18E09D8C4100F2412f37001497351EcE9C2c",
    "userId": "21357518"
  }
}