{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4aeb95bb69cfec1342a623169a8f42c6f3bd701abffa605fa5616ae4e8764cc8",
    "signature": "0xfd600921bdfb4a06b8a394cb1192c2d1ff710ce8c3b5221a4f59232872ae99db2d1b33fd68b893e65e3dcde7fa7692f316fa4ac5c3d1e5d23755eda54788fd771c",
    "signer": "0x5Add82A3A3Dc396F72491D6766788d9Cb30b0d70",
    "userId": "166193681"
  }
}