{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "321204",
    "entityType": "User",
    "nonce": "0x474ebc6ef0d9917f30a7e0af45ca7668c5ea627e94e0c1867922d16318f78cef",
    "signature": "0x917c1979ff3e1bfff3fd5dd0761659dc882d85b57326e09943c9aab339a4d31a49df732beb03c6175050d32eb240b40c024c486ce859b474f0e30a7e8c4ef0cd1b",
    "signer": "0x934Db5f5C1A0639a5C916d7B94bf5844615F71DA",
    "userId": "753385178"
  }
}