{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "742786650",
    "entityType": "User",
    "nonce": "0xb7b53a75cd3fc2609ff21afe1126bc90367564dfa0904583fdfab26e03e52363",
    "signature": "0x7ae41d2c7cae13a37514f75452ffabaaf3afbafd1130bbdc4fe6dce40e7ae15a6d21629df28bd170d57e4a04bef81c870326cf5964e65f00008b7e8c74c76dc81b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}