{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1778",
    "entityType": "User",
    "nonce": "0xf4cd7cd433e6c3a97b2b49cdca141de96c257e3697751bf4f506e968433b6889",
    "signature": "0x27ab3fdbce5ad12d109c95a67518992d622e8e77e8ec77fd91c624b6dfe5b5c43fd35f08f0640f054e8f5ea4cf3b4f3ae9e7be253edeaea4ffbb08ea0f118caf1b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}