{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6542",
    "entityType": "User",
    "nonce": "0xba4b992d00759540f11e3fc9c2a70e1206b7b2350a67c21c87b0705e5661ea22",
    "signature": "0x33f7dd1a4692153641f7ff32d5f466e239d84d9b6c175bb21b26c2b6093f4e7667b69b55328c68e5cb1bc48311711df7f1c676ecfa1fb614169992b16dc0aa7d1b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}