{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2194",
    "entityType": "User",
    "nonce": "0x010dadbcaf54b14cb8850e4386d673f6cb503c7f59d4d0800f81af323a7056b7",
    "signature": "0xae2d1e8505db74467aba350db1f1d62dcaedd4ddd3a844b7f26643e712b944df02a932e6af836ccd47e38fb0d316d5f29e4ed09c924e33547a8ff2c0ecef5f8e1c",
    "signer": "0x257c9f4A9563d6A4a2bF3be7Da1738e167fcF295",
    "userId": "301719964"
  }
}