{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50737590",
    "entityType": "User",
    "nonce": "0xcb719583b9040d3bde0075c93906875a2ee89a7b34143db26f91b48b8828ae3a",
    "signature": "0x06bb1cb7306ba6d0d2ef06cfa56b4dd90c8a612b484710c2700ce0db23eec66a709d51178565115253e2c82152e69f7f35b060a9a0eadb9942e2a82ce76376171b",
    "signer": "0xd9bA17330fFb3Ea1356C5eC14971D9e1f2cb5200",
    "userId": "337125448"
  }
}