{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "283329846",
    "entityType": "User",
    "nonce": "0xa29c6d7fc3938ad2653fe4a2e018d55bb0040aeb737d05ba368279637d64d4a9",
    "signature": "0xb8a398d779849b5482ec7da53f2ba4dbcecdc714d43bc99cc1dca2f6b5a9b94b6f543b02b95abc74df91f8c13d32a684a17a88cb39caf3b5ff58fa53b668709f1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}