{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "254245",
    "entityType": "User",
    "nonce": "0x7a10044ae0b875c839aa708e950338d0c7411a25b2120a6ece9eb2de8fa71435",
    "signature": "0x41cc20d7ad5fb0b88167a876a726649be1d1e447236aa959afa448e32b8e86c76a9f3ad7b648e6ccad467bf73db5e175b49172ddd255c30c4dd5105d5c90b8db1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}