{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "406225571",
    "entityType": "User",
    "nonce": "0x75bee38cd9d9f92d4f1c92ec907a137632ed2a63809ab38a4ae1d4a58581e95a",
    "signature": "0xae6db6ae08cae2a0a6e9aff4077fa1366d8693ff2a32ec9c2ff5bb93ca8899ea21f46420e840b41b3dd2d21324d27d17946cf44fae1d284c16252c9eb7ec7aa41b",
    "signer": "0xA2431a8293fD33C6289244D08A91489fF2C9f18A",
    "userId": "325308787"
  }
}