{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1429398",
    "entityType": "User",
    "nonce": "0xf74f4988890192f52c4b46ecaa859cbb759b6b4ea148f2f0ce9bcc3139bdec9d",
    "signature": "0xf5a2f45fd31b9e24ba5c7167561a07e3638b925abff42b95c4e93b8a2a068d895e6809488485b26a10391a9304e9ed5d49872687f678987978ee849e24e022041b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}