{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28900",
    "entityType": "User",
    "nonce": "0x67c48d3245997069493dc2ba9c50d82ddf6f85e3b991b770ee0ffed61fcd56f5",
    "signature": "0x34d1f33e8dcd2d6f342fa72e5f7c8bbc6f2b192dee3e0fd119400cd61ed7666952fd16e3900184aceea25a1d3589fcf099e0d12b02da03b84817864644b15f281b",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}