{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "64800",
    "entityType": "User",
    "nonce": "0x415207f40eb8a16c85ca1eb8a7d8145713a7391feae39dfac477aaf6ab3c6ce0",
    "signature": "0xba3ee820e2c81bd5487dbe5467555a6abb90c86b6e54e9552eb386a01bd30fc903b79cc47eca28de76dab173a07fddec69f5b64aafb727fc02f90b9176e3b61f1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}