{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x1a5456ce9833a04881fdc4d51bbf7c2a9046b31497db5fc41b6278394dc251ff",
    "signature": "0x68dfeb7d5ea2ae1ad747a0fa931be1a42d897714116df882d8b8c7c6d84e2554671a031ddc68c5da18b1d97f268eed5cc31219e5d83c89824a0896343e89e2901c",
    "signer": "0x80BaBdd7604de656E45b52EFA056548D7C078B36",
    "userId": "790313179"
  }
}