{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "123857",
    "entityType": "User",
    "nonce": "0xdf8f84490c40c3c450285b164c94673cf00efae789641ba95dd005750278fbb8",
    "signature": "0x209a63e27ba1e0696602cc897a89d207ccf11dd93860532d50cc23e98c3ee1b3430f8b52ea5c6dd48521a66a26ba0fe42cc42dd6bd08bee717a5dd768a947ae41c",
    "signer": "0x71AED49c277ABe566496bAcE2c846133F3013504",
    "userId": "265579586"
  }
}