{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "849530",
    "entityType": "User",
    "nonce": "0x3e2898416ae2daeef67387539cf3bdd1c2e2f8f38e3154c14a1c8956b1176789",
    "signature": "0xf3e2a824783d4fb25bea7bf91746055ba41d24e98651cef0930c8aadf7daa48b30a85c5fe4a972d2dc6e0a63c7bc5c4e0965d994f8cb8cec96c0b5dc17db52f51b",
    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
    "userId": "51"
  }
}