{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd0be83606c3bdf0a9638aea6f4a9bae6a917f43e94b5ab98d56c07d24742661a",
    "signature": "0x0e131b072904fa38f71c225c37dfdda32f332538c70421f38a29514ea5dccbe12d9e5217eeb93897db85fdaea8d03ea0cb86b40ab32622e449538fadc8e9cd071b",
    "signer": "0x91E2D456A8166582638e85F1A1C0cf3e868C3d04",
    "userId": "68355774"
  }
}