{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0xfc075594cf4e6433ff79e4ee427342ff5a052a28b6e2434ce447f4f87a292384",
    "signature": "0x76841d65d2f883616b5f4fd67108363224595759738d35afef1cc8f80ccfa31c6e46a6ef005fe04442f0bab5f39337d0b85bb78b8086d9df5a198682f2e520201c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}