{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3440",
    "entityType": "User",
    "nonce": "0x03ebb466961d6749abbe0348c8336c5b379611e717ce854a4443889d91923e46",
    "signature": "0xcf27d4567cb7975098c3be096af30876ebd833db10e8d58a7a5aa3a4ea6de27643f4baf816283bbe3bf68a98cfcd70b9a639455e9a67b8452aadf106abe00e161c",
    "signer": "0xdCAf5149A8084F2C1c72dE882740656EfA9715b4",
    "userId": "994758391"
  }
}