{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "613870",
    "entityType": "User",
    "nonce": "0xf8b542cffed81ac895b5d36424712515ddaffe56eefa5ef73f2cf75123677e41",
    "signature": "0xb367320c649988df296ff9e80c742f8e76055743001cfa9b13b6b9fcb188356d35d9af091caf544a7f7987f67770008997c17b62bac15c747a0fba7b0c0631d61b",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}