{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620307004",
    "entityType": "User",
    "nonce": "0x0469229e0d39d185b10923b80d337ba7427bd872fc54d7157b37543b80415810",
    "signature": "0x17e843793c7a6fd6116c4aa4dd88bfcf13e240e74643557d8ed8d6916b8dda3930e59283a425511e90da8e1c9de5e709d216dd7da6195b77f2946108355b64531b",
    "signer": "0xf1b266FaB316100908263c082e562a5B847A0384",
    "userId": "575269234"
  }
}