{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x5c2d4edbcb2b29efe1f4a8011165c6731ed54a5913b68d2ba4c058424d2eb850",
    "signature": "0x4cd551c0e658e0e27c2abd484301aa8a4e328ecf45c3b9537f755ee1151966a939fdf198449f83b74f1c7bb43efc121472699709bc8b1886be997358b8c73dc41b",
    "signer": "0x9e3231A1D406901408a187cb20b331513f6110eE",
    "userId": "463741311"
  }
}