{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0f4094a166a4d0705fe01ea446fb28e368aad5d8cf030ecd26672af2f1fdcb63",
    "signature": "0xeb6b0cbbdd45fe7a749cd63de67dd9b8d38735c9dca67e0865ffa04973acaa1f352ddc8afd756f5f1020ed1f058d8c58ae6c0aaa96a7453b2a9ce0f793f485661b",
    "signer": "0x425CCd65fb2dE0287aDB28982363D86d0Dd6D858",
    "userId": "887026618"
  }
}