{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3400",
    "entityType": "User",
    "nonce": "0x9100cc36674734bff5766818412e27e229f2c6d401d4b12dfb44fe7f65c46fcb",
    "signature": "0xfcd7f2ecb19d4f6b1d6895a25fede57923c3b392c3a71bb5b4389476275e749e312f066aafbab352efa127ac6db21ee2f83d3f318ca39e15083b8e95bd6ac5341b",
    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}