{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "313481598",
    "entityType": "User",
    "nonce": "0x9c6cc68bc9b5b01d9c727f761e00d712ae8d8ef2bef69ee01cc887388d106496",
    "signature": "0x4dcaedddaa3bb5b1305efea5754ae7793c6e80b8ca5133649d30cbb71830cae6013f36ff90a70a7e623288b0818c86684d2671814fa3902093d24db2c575dd0c1c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}