{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "558452493",
    "entityType": "User",
    "nonce": "0x4ee822cb4ffe62670d79441263c274ab4c6ac2bbff4172a1b8012545be109ead",
    "signature": "0xaf3fa7d2bb8e0e3e26852f83e40bf09d95a1a1faea206ebbb76513e2efe41793608d8c5069090eabcc3a8179554e077c8d7d1514ea7180ae7edafe0baea8a73e1c",
    "signer": "0xf7cb5Bb69a63cFcc4E9FEAB1eD8Ba25fcD527B3e",
    "userId": "976458054"
  }
}