{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "207878",
    "entityType": "User",
    "nonce": "0x3b297f438a073541c450c83629d9bbe74eaf43912ca93c176bad612dc293d78f",
    "signature": "0xe60cfd6d83e770ad2eb9d30aa21d23f00a05a2b3977a750b85fc7d0156b9d15626e0fd06db0818517e36ebcf9ff8bdfb63eaba7b8709ee17de88e7eda195dd9f1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}