{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5642",
    "entityType": "User",
    "nonce": "0x3ce95fa5c91c949be8e34543e6a5467d43c1ff0629a251fc12698651ae7955cd",
    "signature": "0xd44e80d1a5bb19b24b409f99dd355a217332824389ffed8d9c02efdebda59e631061b7e97393b232059b0984b652ab6a72a806c8db3c34ab455c182a39d01af91c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}