{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "995293503",
    "entityType": "User",
    "nonce": "0x8fb2582f617715db8306d1754ccf35a19fb072b0a62b8add372cbeae4feb65a7",
    "signature": "0x7650cfe2f3aba1b3602af11a6b260253e93a112a31ff8909597d592e08d69f9d7933ad5544c9358aff8a6c296a3592d04859c593f276d8c501583c2b6e0bfa811c",
    "signer": "0x20a821B898F6Cb6BB0E5FB2460eD4225B40Bd68D",
    "userId": "198400104"
  }
}