{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1930838",
    "entityType": "User",
    "nonce": "0x7b90006a95eeadd6b773814159a83351041147cdcec5ab1b42f44b734830995d",
    "signature": "0x205c3237940ce83faa70c2a000b05e44531854cf96db1063fb6adb269693b3675f028a5443c494fe0becd8ff97d3a2b74cd42a8c002f2380db3c977d750b8d511c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}