{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "753839306",
    "entityType": "User",
    "nonce": "0x6d807f3e6171b1ebc0be58c87c49325dfc1a73b07fa06add7b6d0aab09e9a5ce",
    "signature": "0x9717aa9ed9fa14b529a80bd6a7483585e287680ebe679fd0de3a01cbee276f781a6da21e703f563775882b49ce303a9a27bb157d6e0bb7bba5d6f3dba22b6dca1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}