{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb4ffd32e43c9c18ee7677d7e4fc0d7fbd34207224f764bf42ba90913cbc282c0",
    "signature": "0xbebd46cab04190c2de44089390edac29f274f35b0b1660dff0e641aea15449d919206e33db24721f13f9ac0bb26abe066cc82dc2d20aa8600c08bb66ce8c24a71b",
    "signer": "0x5874F6a7aec99258Da22B2A104b49d1d152f3B64",
    "userId": "212279584"
  }
}