{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0x50a91b7a8884eb8a87ec9d02952b9924b7c9f279ef34cf7d8f99a7b2641db352",
    "signature": "0xe4c0f9b11a65a378dab11aa9b5f8bb4abc6dfe7117c0a04d0836dfb4662a5e4a26f095c6024dc3e23429f26a4ebb90bb54f327710dfb6a6a41c9bc803a4e8d6b1b",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}