{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3290",
    "entityType": "User",
    "nonce": "0x0aa300b6a60a5148377014398638b60452be6cf0d10d6cf7257049da23d48c9a",
    "signature": "0x0fc6664cf27fc8d0cb19d8bad076ccf33f1fbf07ce826282a8e72cb1f19b88177271bcdb55d3400ea30ec99bf177efb8e2236cddf6074a4e890008f218dd871c1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}