{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "801898123",
    "entityType": "User",
    "nonce": "0x7fa6e979fb8c636be4da1ff117f131bf04c69145116eff9fc69f453674303891",
    "signature": "0xce401bed70e53372d044a8e647e32b4f67866a0a7a613a10f752d75635c7a4f7518a2a7ad9f7d442c9ec15db53b651e6c1e73c4fef131e9019676183cfee86ac1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}