{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc5920f1e00e3e3ea4e8847e664acc01e73ad5ef924e4ec953ac9d5462c000c78",
    "signature": "0x71c7e5d0eb1e92cf9677555324cadfb6cf5e871751d1825da9db155b499612ad53038cb56d3b4d8fc09c9457840fa94c8703e553728afbf9f23de65ed2f72be41b",
    "signer": "0xf0C352ee326e6A315EF96924eD159709F77e0398",
    "userId": "293071658"
  }
}