{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x91ab6a7ec919b2c75486953f896facce2daf89a0e86dc5a0d2302bec11dc9db2",
    "signature": "0x72480173b8f68e84d0ffe166525f889276dc567553f5777ab0d77d4c6ba5c358597ffd3f9de706a10ad6a4ce39e0075ab72dc22b8c32390c516875666c0de6ab1c",
    "signer": "0xE4CbF331C4EfA147291655327CF144e9d07b8f27",
    "userId": "547799893"
  }
}