{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x45ce699cdd85e5196f15c0a6ac6939e42d49a28488440255f55d70f7b3f72ebf",
    "signature": "0xccb795e0cc354fb6104360ae85318b265e439779ddccc391c0bd5579fe52bb0708871db72d2bb23879886bd8f5fd55493fe28308dd3ee76b3138508e3f62e1251c",
    "signer": "0x80BaBdd7604de656E45b52EFA056548D7C078B36",
    "userId": "790313179"
  }
}