{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "298379",
    "entityType": "User",
    "nonce": "0xd3fe470c2952b69faec4955b8383f80516696e31e1734966071f5ba668d4f13b",
    "signature": "0x7ec882437f5e839bad8e2e7148635a0b9f3751d7f42bc34790e959d9f24c2287004e1d8b9792bf1a659cf04cb863a71652db04382b30e8b0a05016e7f44254b41c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}