{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343259028",
    "entityType": "User",
    "nonce": "0xffeba77549b8c4a95240f6e436ec0c6420736b572ef2d4c3a4c5565127d49169",
    "signature": "0xaad8a91115bba5111e8fc818ae7cc94d0b74ed1eed621d5cea0956ba124138fe4647bb49c9c8c52d51438560fb5302e1adaefaef030ae9042e612ab13028beef1b",
    "signer": "0xa3C91a44f620f0b95468bEC359f89edb95AE3cdC",
    "userId": "904405512"
  }
}