{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb07d75691c509966fddf6416d6898f172b1205a4a74b361f83824aba30e2e7ec",
    "signature": "0x88488de45fbe9ab7d22d39d0aceba2a0fce2701e1b4c7db54e4a5c760bfca263672bdc69e96a7d465fc703b06c7aee031f76949aafcc50d96db88aa096ae2e991b",
    "signer": "0x6E8500F0245Fb30FfAD4247f8768AE834c918E23",
    "userId": "819200618"
  }
}