{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "839203271",
    "entityType": "User",
    "nonce": "0xb42b21590dea241ef0bba117b2e380318a107d6d828a48b3d91a048936198c1c",
    "signature": "0x0e874a77db5757a5b17d9e13d4a221d7d4fcf87ef83f689f20800624abd7232e1ff99a43b79912ca9d91ca1f9500ceb68e60bdf92e2660d9140e1874fda43e421b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}