{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "387435",
    "entityType": "User",
    "nonce": "0xb8e9ddbea9ce81b4e14115f99f887592fbbcad40ab5226cb0c31aa90a91445cc",
    "signature": "0xf0ee9d121f0ca444002aaf31b3d5aaa64a14b822c524781aad73a99f803c051114efe72ca6f057e8f6a222c2de4d5a7ad6ac42bc2868270b04fcce5e22667f121b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}