{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "816274",
    "entityType": "User",
    "nonce": "0x6330f4e91b51174682fdc747872280db118aaee85392a6903e026e6887da3b5c",
    "signature": "0x9c40e8fde2bc2092a706f194a258d61ee9003fbb8c30e81a70ca8ed09f4d714801ae7a8d3bca6c08559cbfedf6eb8e199b875f549eb52751e1881a793e32b4961b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}