{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1",
    "entityType": "User",
    "nonce": "0xfcce54d9af39bd652f55ac67616daf6834c3cb31637b96d0458da8cc00c54ef4",
    "signature": "0xe993f72c4aff51222d18a499e6ae04f4dd31e8cab78446f9bf1ebf684b03a04f160bff646379eac7e3aa62accac0128b1140fa202455a849b4830c8e3fb7f8cc1b",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}