{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "123698354",
    "entityType": "User",
    "nonce": "0x57a5b29d5985c4438c868259c0308f096d0424aa5fd31fa1691ba51e3f827839",
    "signature": "0x63bccf599a10ae56404692b049331a6f056fd092fcb5dcd2954d88907965108f3d2d07fd3e3a97ddb40d9c044023b8fa08c4b7e6c58a56181a2fce4a6a8d3b431c",
    "signer": "0xF978BADb562Da025f06a1182ce14a17F541Bce57",
    "userId": "486159454"
  }
}