{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x93a811a7f85d8d0a58170d45b0150ea2f603e8f0e6f807e6ffd823ed4a6e408b",
    "signature": "0xbe1fa76d6bcc07ba668931bf246b0d954a83f46f85e2bbf160268c72afc8ded95a5aa3aaaf102adccaf8135480b18089a29f6f7bf81aecf4fd53b0ab81475a491b",
    "signer": "0xd3d8c91870B94c11c799E606f806B055F5703c7c",
    "userId": "552726984"
  }
}