{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb9b03c257b7cc18263007081c6c7903edb5d05bc84f87e43f27cca83702863d2",
    "signature": "0x73f0edab2cb878ff3c69fdb3085c9441f013fb6c97456c1d5de28781ced73fb941f92342175250b0a5a409d8a9f835dd690656a21c1472dfc224747f1b37bd8a1c",
    "signer": "0xC8d9AbeF68Ba4d4503818aFe0Ca875939cb2CfE7",
    "userId": "228988312"
  }
}