{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1",
    "entityType": "User",
    "nonce": "0x476bf0f922e6e13c340dc3484da81f6afd61117e48533ace5d97543913075a0c",
    "signature": "0x9cd54f12ec545a860f64367f2c5de3ad67916ae9d7aefe87d6b638b66168b6f155855c09afaa4f61b6fdecb0d2ab90090af3d7f7fd3d15e54e255b788d509b5d1b",
    "signer": "0x9837C03EAdfA74365Cdf4e01e6840D356104bFab",
    "userId": "911622928"
  }
}