{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "74012",
    "entityType": "User",
    "nonce": "0xd57c069747745fbd41f012583a23b549bb99fdd3a0f3c57851037590de595595",
    "signature": "0x7928fb05e400b2385d33f6a7be39fa613e1f1ac8e97e0038867507168228759e4dd7d8be4c54f2e7b3652c1e8bc02dd1bf076c8e5161562af7a364ca11aa580c1b",
    "signer": "0xC7D69243b2161915036b32017e4FC8ea02d7faF1",
    "userId": "80378"
  }
}