{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2617",
    "entityType": "User",
    "nonce": "0x92a59cd2bb8a69a8b08e13cc9dbc606a2e1d921392cde4deb2497076ec8fb996",
    "signature": "0x1897e9b4d89284d14290bc9ada02d960abbbccec42294a5bd54d0e1c87f6643922329587e1a0a5aea40f0895f1ea781aab1e6d8209331203db41c634b1831fdc1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}