{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa3ffeb8b67e5c52e76f5cafbc2510f4bbb9ffbaccbd87fe3e9c2286e1eb280b5",
    "signature": "0xab38d281e33b3bf7a882b6274021c066267c8749e89bd7ce0759ff9b09d5a4714921256135762c1f0e8cecb9a57c675deede2a9ac5427c8f0a84b4cdd73391691b",
    "signer": "0xd80624096Af144B7Eba218879A84D12cFf264988",
    "userId": "746744110"
  }
}