{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x6d9075f81061125934b7f9f4b475a719a8568d5be10dba7999a706b51c7cef22",
    "signature": "0xd7cc4e4a733909ab178c6dbc435562592d574dbbe438f7c4873d8f30cd07440c162b0d4b2e598bdc5bebe8ba10f680c08ace8b6b25b0d1818552d53849dbb9d91b",
    "signer": "0xCf3E6F9F4BF41C4e355E01484A92aaf61B6dd8a3",
    "userId": "149919577"
  }
}