{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1646345",
    "entityType": "User",
    "nonce": "0x0733c79274d8caf03d7979d60b7dee809fe7f639a914f758429e8d0cb03be549",
    "signature": "0x38748945c1c54c2de3051d98f474026e6dc589dee4bd8e7aaa8095a68acd9b050fb8a6367a778a3e0615e4ce4338a9c9c645a04c91993b5cd58b21b742cdfc601b",
    "signer": "0x60824E42B28a3C9D7A9eB6A6feFC1cfB7B41F7C2",
    "userId": "914462657"
  }
}