{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xae875d3bb71fb8bd40692cc961adba6ee33c6ab5c034275a05a74221f781e321",
    "signature": "0xb33346ceef8519037f0348cba65aa674d04b96be015f0cad0def00f7e57ab64e652092a6f952a9911dcb3afe30e16473ca56b5678c5da00c896632e305571b9f1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}