{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x913369ad15ae11cea48b600b4ed3d11987f8ae4a920855a78148f702e3e34080",
    "signature": "0x31740f57c87e7b158788be108886a3ff0e30da3841433eaa4e69a7c76b9a89b44d0e29f5a2dd5a2aae8b705049c47da4ac50fe4e9305e802d5441adb743575051c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}