{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x9da73d536a37f866cbea1b5126eddb8ac63273eb6fc9aeae8eda9c997dc72f49",
    "signature": "0xd12131e6b4bc81be6c5f87623b9a826fa82aa85c0a8d3ba480d33340d342c1e544c1d0346fa284c3c353152b883baae25f06166d632d8d5ee6aff1451f4b062a1b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}