{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "829358377",
    "entityType": "User",
    "nonce": "0x689cf3e8ec654a01eeadb0dae48c2aa17f4dd1a59ede3ccef55068930e81d8c2",
    "signature": "0x50cc3b26e2c70d00b5e448b2cc5f7f3e4859da17fa739661c4febed67a1f1b8b13addfdcc79042676688f8ba0987b7078eca36b5405aa673be6de1da04cc075f1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}