{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1b720e6171e58b4ee6dbefbc8fd623fd05ce37836003da8ca089a02d4b9f737e",
    "signature": "0x59d07f7281817f79d849582ce73c77336bcb7af302919667b2dff1195beabe6958e2205b135c9ec71f07e1491f1198146e3ba3cc8afceb5f416bfa2a1e6bc39c1b",
    "signer": "0x85F40D77142B1fEFf7115d08206EF64fb6aaDA64",
    "userId": "272149864"
  }
}