{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xeb1b41a2a7b47bffa7f6bdcd928601f3be2565cc306c56596ee8cdaa3f324c8e",
    "signature": "0xde9dc251e1e4d4e8d1d9afed7a7ed6bb3135196079b4c94d923c07bc37fef3e661d2a55b400f735c5b039ec9d14b3daace1ec5a352a73e9e25e9b54c844a41c91b",
    "signer": "0x1b22DFd21C374352B29D9c61104A94A85e383af4",
    "userId": "309919623"
  }
}