{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4453",
    "entityType": "User",
    "nonce": "0x26a382897d2b931cbcd2f59b00c8e79c59aa787f78573a38ae6cbfc4766da6d2",
    "signature": "0xdc638d0b3401b5de6f3e96a487f1f7fd688373702f7cb2ca3e3b1604dbcb191513dc0ff4ef5f6f92afbef352173f3a03f3de0ff79228beb710f0bd56c446ba1c1b",
    "signer": "0x585E1741D553166698Cd60709950BC8c9B0a97BE",
    "userId": "984791554"
  }
}