{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfecbc5376369c72ec7a696be3aee649a6688d8790def92b6843e106d7223552a",
    "signature": "0xcd4e64a7b073e2ccf546f456bfbb17f4e9c944847e0c97d6e1de026da55511cf399fe7f577f4a693059bb4cdc64976be2acb0fefda3d4bd78b34dca706a670f11b",
    "signer": "0x4B140b61EB41438Cda0Dd10473ad1334309C1b97",
    "userId": "45511108"
  }
}