{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3ef47f1c8645a666fbac627c9acb68834148054561b88c44f2eb8af3f1de9ba0",
    "signature": "0x6fad853dbdcf106e462152506bf3dd4044e6829248a7067a8930c6065e8c04470dbffc4a7f10c16a53b874d61beb34bde0d11f68d66c134ac856f255b83f79071b",
    "signer": "0x48bDD1fc91E6d1b5Ca6753074bd900D4EDc51229",
    "userId": "852538295"
  }
}