{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x27b01236966d8f93c0015035e3ec902219f41ac91f055ce1bb70230cf400d99c",
    "signature": "0x59a522b8d2403721f43d94f544f04723869d59bb8c9b88c9a91c641a4f78eab230949f4b03f30f5a263f0e427c0b59b26b51a90a98acd4ca08476da23278e3391c",
    "signer": "0xd22a057BD42992d379e97B312d868d907D7335AF",
    "userId": "457613220"
  }
}