{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "383103",
    "entityType": "User",
    "nonce": "0xe73fe7c105fa9e5240043a7a4a9e7d12e59dbe86dad7d573a574d78135b58a28",
    "signature": "0x8cc2d372fef4e41a9774e0b131a3307a089522b6cc38d68cd7fd0c570260aeb75c29c77f90ee6ad7105c9715a723f7fd5adf6ef6ccf4384c42eb2b74ebd4dcc71c",
    "signer": "0xf86eFbd04a21E17dBD9908C016306c8211e740B4",
    "userId": "770730210"
  }
}