{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x15819fa3a09963bd1debc62af89230a195e6c854416b81d3d272d8d35c395075",
    "signature": "0x9ededc595d4e15cc88f7b98a758cfd671e7d466cec845684508bb041ebaf8b790274f2d92e71b105ed531955016bef35163cf3fd9c8e931ef4d792fa7ee13ed91c",
    "signer": "0x811cFd0297c116966284Bde337C5e1262690B266",
    "userId": "757047353"
  }
}