{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xc250c787f54fbd7b87f5ca8cd79d155e2782bc0d44f8b632582b8ea8cd5105e9",
    "signature": "0x4f1c692ef254a4528610348a187eb19706ce60621f06a1d6f38b14e2301560aa741524dd83ed2a6758cfee4982d015300ec5c806efd7f088b508648651b432d81b",
    "signer": "0x5Af531A9cDF9747df40f57531227d70F1bdD2ed7",
    "userId": "511108744"
  }
}