{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb2e897be8ae6c8620ea6bd8b3fddcb74fd99b3166575969fee3e31223f310a66",
    "signature": "0x8e7ca2b4eec2728516d05838e0a5cfe5c25fb2e1a19eda07178fa70812c329443d391f240c32c237468fcef2671f2e4ef774f5df638005cd43106cbb70af97181b",
    "signer": "0xD37bFbe502C93C3571456a25d2e3856C804e9FfB",
    "userId": "230035127"
  }
}