{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "328247",
    "entityType": "User",
    "nonce": "0xa2206cc2e7130c4b5b6679281b5cc89b478ce2e2228111df663c83f2f49eb3a1",
    "signature": "0x1a8dcade1283aaf596ad009173ebf7a4d0d484f11f78b5f4eaa23f01c0381b485b1ccd689dfc8b063431ccb2e99f75487cc5f90a4be10a70b42f9e67f9903b821b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}