{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "367647512",
    "entityType": "User",
    "nonce": "0xdb7171251ead91e09e7f6888150d0e88cf69fb8132111f25f96f439f3a172b11",
    "signature": "0xd405ff2516e37dd2dcad57fbf37330ebd10d0f9cea4ad44a0d5907546b80188f66841ff908038cf92c489f5943d03334429a325d2655c649a07a6003c87dd6831b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}