{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "730225845",
    "entityType": "User",
    "nonce": "0x18ae94a57c527c8006fdc43822eb41e52662370d0003f0343be44b76e6ca5da2",
    "signature": "0x81ed3fc369ac8c13b880557f152c2baaaec06468fcdf89335f5d4484deacb8807771b93e1b8d93ea9a4488216ec4559f6e007e02bc3569fcd790e18947724d001b",
    "signer": "0x5c51216FbbB9B7A562f11267f91f72A7be1e8DE3",
    "userId": "301637"
  }
}