{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xfe469fc92b713c2928b66d5e810f1fed23544d98f3a90532a095bf9444914161",
    "signature": "0x0ca14f31727a03a899b26b163f28ce146387867e71a0656b816110a3a73503e16fd7cc1f5784b0812f54bd9e5fd9b4647b59a6d02fdd3293bdab8a7e88af68ef1b",
    "signer": "0x53d216C674F2a330cE48F25b556d4339bcf6515c",
    "userId": "448697058"
  }
}