{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "74714",
    "entityType": "User",
    "nonce": "0x228163e882f6d5cd0fe5c3c985a2b077d9dcad1d1ea1df7bd0d47a22f3d7000b",
    "signature": "0x01d61b042bcfe240eb59eda4d00c3f0dc3386f4da54d46707bb670944c8f3870113d52d7afa23be45e2f27b9c3fb1efc9b713a9563d995849299171db40451a91b",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}