{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xaa5108b673a11a7dcacf53b7b62ef22cff87dbb776995cb270e93661608a446c",
    "signature": "0x742de3c51592724b6e50a1790d923333ce212fc94b3f8dd4da995f756d665e5030c177a3efa3b683e3040bc793ad1be7434abf0a7841d914463e4ac67ca28c7a1c",
    "signer": "0x115E9ED4b6780eD9AA6C5c972Cd8C86BfBC2A6f9",
    "userId": "302723743"
  }
}