{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54134",
    "entityType": "User",
    "nonce": "0x381893f8e53d3d5fea691e8e1d0d6e113d8a6746714d1ed3f94e24d659fde5ee",
    "signature": "0x94132d9cb71e172fbf8b97a96f784c3b797ad01131d0ce3a97d7d3a79004f1493d93ff8e72f263af5da2edbb29b9921cb48588aa1247719378ffa744acf11e221c",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}