{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x429e03b62db6f429b9e6a5d2c49a48f7f14d08ab103da4178be61b2229524e4c",
    "signature": "0xb032b11d34d6a3da6c08e6546f0bba4ded1fc2d0b097b5b9c71972c990250e6119765bc7d08016b953f6741909fc59703c030ffba957cfcf390a7bba6b939fd91b",
    "signer": "0x354ed9e3b93fbae011B9648914AA74FaB4Fa295c",
    "userId": "906232662"
  }
}