{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4429",
    "entityType": "User",
    "nonce": "0xf9f57bca6d0e1c10b42ff07d7c427eb688889dcf835c6ba8f23a80d6cc2eb235",
    "signature": "0xee9d1055790704c0e467366e2c30e45975423a9045c7a3bbb8f7cc776774033021ec22febfeb9c7971d8ed4b37dfc9ddfe479652613b6329b5ee077dbf7210881c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}