{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "667809204",
    "entityType": "User",
    "nonce": "0x2ed22a67141c0f4fc7ec32509e258f60f1a60a153609172fab487746f650b3c0",
    "signature": "0x21f9468694f24986e7a45e1ff76818f117f274e0eaefea9f8b827e9861ad3f5d725160dd14b09ee805979eb29cf81ca85bbdefca56c9df097a6cc514e633e7271b",
    "signer": "0x21370B7a703524cC2941323C2c960224021F8D56",
    "userId": "986168993"
  }
}