{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x21307e6d2caafc9fc81cc36c8d617f9786e531d3d33f5bf7f6122623eccf1568",
    "signature": "0xc840b98375a25e69a3ff3fc2fb3bf739a41cf17f9baa3c766e9a49fe6c93448f015e1ec9f7c89d8de057ff0b59d4ae98bff5046ac510b0a7dc15144f5915cf3c1b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}