{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51359",
    "entityType": "User",
    "nonce": "0x99248a35593bddcc20057116067753f3b08321049b9659ede53bf44e9b2654cd",
    "signature": "0x857a601a9b37567af58a8854b89bc70f4f0c5974f6e19ea3dc5af6a826969a535a4577d2ee59b61b7d18c1163afa038b2f14a3e1e6425a270ec18a4a56e6b20b1c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}