{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "253360517",
    "entityType": "User",
    "nonce": "0x5eea23d3c86238e0971150bf93c878ce1652a996743bc6095578de6ecdac4365",
    "signature": "0x4b5109eb98f12a8ae28d6cc4da092b40d8b4d52a17850dc8eb88f02be5ff700a3058333b8c9dfdf03358c208e545b45fe3f436d376c7c3240b66d29fe381b13a1b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}