{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7548",
    "entityType": "User",
    "nonce": "0xa785df5507cf9ea59c9e678cc174bed4b94b9948152daaf823ac4571ff75d976",
    "signature": "0x9148e3490d81152101801ba1c6f8ea0b252330351374b4cf161f7b237adb4ea2414dacc3df276ae3e0bd2517a840edee8fa41ff0b31701da7928ade49c0b11961b",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}