{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "632918751",
    "entityType": "User",
    "nonce": "0xc419a0f202748ee3da216a097b7fa43d573fc7d53dde386585b27267d4c0da1b",
    "signature": "0x2c677404ca27fc7229a27af53d3cf2af42edd34bfbb2a00be2be317b11beb32b6de854eb096bcbc0a52e7b871cf29a77b1468779cdfa4544b913b09bf410d7281b",
    "signer": "0xc4A500E17D812B285447720CCcb7F8eB148c91bd",
    "userId": "256479919"
  }
}