{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "155973826",
    "entityType": "User",
    "nonce": "0xeea123485cc2f96cd0797ce11232867459771fd392aa7b8a447a1e0e609a766f",
    "signature": "0x9f2892258393c8799f90411ff601ae79e9f57482a8cb98a8cf7d58d6289c195e638bd63f8b1cf3bb954279d4d077f81c5c87f93dc3b09142b983ba2cb965e05d1b",
    "signer": "0xf96057D7c5a737443d6216D67a29B7c2fd8EE11C",
    "userId": "21156469"
  }
}