{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "591531579",
    "entityType": "User",
    "nonce": "0xa9032b560aec6a4eda396de2b5979e7c7f3b18597a20ce2e5e5729d69485dafe",
    "signature": "0x1a0d785a2beebf11179e2ddedeb3e6650c423c027b8a0bb61b7658b015a93b892ca9b3aa62b469e4cd65e69f9d403dc1e8b7d3f4dd0d8aefcb1db5796cccf8931b",
    "signer": "0x21e530f5EA8E24d2476C3Ff8253D151693719385",
    "userId": "854449345"
  }
}