{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18103630",
    "entityType": "User",
    "nonce": "0x0f19a923f6615673b84b35d4c5267ac509d731f9815782613d03d62cf2740aed",
    "signature": "0x137915b79343009285b374357c0376dd10c04adf616f7619d73d619764872da5521d60ee2721d769e60ad7d2c3c6b0568fada8196e03ef21c0f52f80f6a9f5341c",
    "signer": "0x6d6397f74d01E51Fc0C654f5703B972e7CF26876",
    "userId": "237542932"
  }
}