{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50672",
    "entityType": "User",
    "nonce": "0x83d4f888580c8e8928d3ed852682fdd89842ce42ffd4c797afbc5148aada1fcc",
    "signature": "0x21dd50ac09ba7eade01ae52a5190f5c0465deb011a5b374c1756e3ec5a6b7c21469b9a368c4ea6373174a57686a82d1e00477b437b07481936140e5b283f493a1b",
    "signer": "0x68ce3cB584104AD4EB2c93F3A19F0E8222AE6e0c",
    "userId": "617363593"
  }
}