{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "722764767",
    "entityType": "User",
    "nonce": "0xb89cb630f6b80f0c3de9d946c466bc7d7b3cc7c924d7bf8df65ef688b71f5620",
    "signature": "0xf8fbd18e3a1516a2e9bca5b877dddf6507f7bfb706d205d0c16b0d61d7ed3f8e53178fab7a37c3b09afb1a92e397470e46035bc1053c7ff8a77d81ce3ec9efe41b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}