{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcf259d0a3cf18f3c0817332a38077366226eda8ed9fcc9b87b561a98da7d7c68",
    "signature": "0x53524d5a20f7a4acb11861a609421c1a5d9fff57b16c2698e4dd50d2303b3a202a836b0856570bd6c069dce3cd76b5352e65ee54e71f6c7dcb43d7d7c5e559441c",
    "signer": "0x7f933f9d97d571978e0E839ff4e41c0aE56666f5",
    "userId": "992970122"
  }
}