{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7599",
    "entityType": "User",
    "nonce": "0x65cee359f327c0aeddb62f6385297fa0b7cdaa778f98c765915882711aa5d62c",
    "signature": "0x8331ff7ca640ccdf1839042267e2cfe45aec706c55bef0c0f1f5567bb6e257e37f953e3bf65685440d0d60b39dc9b1a07be6b603832176d764b78b0b97edb29f1b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}