{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75249",
    "entityType": "User",
    "nonce": "0x11941fe8315d059ea94e647a4c92a68e26993ccc8e45a7f425d2f26d7ecad9cc",
    "signature": "0x5016ef181bc9bcc7489e55885d629237ea4a82ebc23dfee622ffee346334aa295e200181ddc492030b4baed78c7b3cf81de3bbf559e12d9992ecac95dd92e46b1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}