{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "138189",
    "entityType": "User",
    "nonce": "0x1d2033bc838bbec7bb666f2459d472a7488be88f01a286366c84e1702dd75a02",
    "signature": "0xfd455fec7acab35d2fc85dcc2c985c711153a831f99d9aedebb045f92b369f140a2ccfc1f61e0263106ee961a54619f2e353c777a70e22626884363068d26f661c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}