{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "280208",
    "entityType": "User",
    "nonce": "0xd94ac1d88eacab87432705edd18d99e06481c4ca2f973887d4bec8f85fa758b8",
    "signature": "0x20fb753a6861225373361b4739fc46da31ee4bd93e320490ab97623992869a561b3b37e228bd246564e8b47996f01f526e2b6c271bfcd5c358ec6e54fe8edd8c1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}