{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4322",
    "entityType": "User",
    "nonce": "0x8f0c58cb499d8eac5149983e3e70801aad2bcdd9ea53da33d2605758425e78ba",
    "signature": "0x7a88186af95c55ddb47d3d7a88ab07a3bb84b5c972ef53e185a0505bc08c8a615f258410976b74bf4a8829cde185a661e212b196d136ece3f62eda5b38a729971c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}