{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "555553478",
    "entityType": "User",
    "nonce": "0x0b1fde5f484d0790d8e09d9b1d213b322f5aea14033775cc0df343696b4310dc",
    "signature": "0x93c637c36cec58a6153bc6b4c29f011a0b9b8bdbb9364c8097a97ece27d6e02b2a9ac553d00eb224e5887b42c49e37d0ba94efcfc25d63621a5dffb6d35778561b",
    "signer": "0x1ABf6DD41fe1E6b1C2d3A69859a25C92caa31b32",
    "userId": "17689"
  }
}