{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "448011",
    "entityType": "User",
    "nonce": "0x4115d95fc4f871f2ddff07680294134db65f0249a09706393bf93b02bdfa8bd4",
    "signature": "0xa225015da6c3e4d47544f28be32fc7be7081253fb9d5e4e3b12ba8c528508565426ba97425b4012c833e5b90b0b4d91178b48983155f49832a25a1f7d1be28c91b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}