{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991821949",
    "entityType": "User",
    "nonce": "0x1a4f6ade3255880f249f2e2248c2a208cfcc51c0b5ece7262a939c3b52938509",
    "signature": "0xfaf22235b35f069bddd5aa1de7c1f5e022ebfdbad99f307ea668814814ca0d7a6cfd985516289c623aa7eba010fbf15f10699be56abd71124b526f8eb663cb9a1c",
    "signer": "0x1011297FAB27Cd869ba8313983bF4793AB784705",
    "userId": "540848139"
  }
}