{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308666",
    "entityType": "User",
    "nonce": "0xca9c4a354609318eb007e70407e9fa6e03c8933a5f356dfb81e1271b33858c9c",
    "signature": "0xa84b976fb760a980e1fe0ba84d236b32f4dcc3714d2f6ba099dc83cd1caf7a891aae130a298dbad90bc46fac4a17e5f7d204d5b1f29ac228cf6a93c365f2c6321b",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}