{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc34d185150d2fd4459b3486dc62ffac471f98a7d49d24bb6ca9cf15694af7109",
    "signature": "0x1cef6030745772dc62a1ecdc5e74ac220878e7cabec5f89375374011af401f821e1d5fabfe3d123c2d03cb1a7f83c5bfbdbe8ed6300a29d01c65670b6b8e123e1b",
    "signer": "0xF4DF2D2931c55efC8d4A95Ff5b05579fC73e6565",
    "userId": "390509028"
  }
}