{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x548ebef92fe013b7b67501c0770a7ca0c30f08be8e4b5bec0448764703a2ad97",
    "signature": "0x8b25a983ce8a2f0c8af4b968526302f1c79f41d31c73d08374b98b015033460f24b730976e6e58053d2021a0f7375cc030f3e9bbd90ef7f5435ae7c0923ed54b1c",
    "signer": "0x515a3648a035Eb9Cec60Cf6F10D7d45D40f415fb",
    "userId": "70052370"
  }
}