{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x249ad9c6de8917b3079d98f71cccef158cf2031740a42472f80b07eea03c14e3",
    "signature": "0xf76aea53214ed399fc4483c2b9790cc29d9a04acd7bf44b528972d7edfc67fb61919ba47a0c91c7a2b7f1ec09e19e583358871a2b40a111197eeba82b942b7d81b",
    "signer": "0xf547e66038154B5Eb07066cAAFCd037C515A20e0",
    "userId": "76940054"
  }
}