{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18985",
    "entityType": "User",
    "nonce": "0x6885376267df78bf2cd18e87d8a2f9b7578a8a4693b463487d5d3fc24cd7c370",
    "signature": "0x01e7b2c7d52c1ff259850468ed886a4ce21241886eab91ddaa06ee838f70931975cdcc25708ba03844a07d0a8950912cab459bec6b1b205e3cd58e14561aab811c",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}