{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "828403040",
    "entityType": "User",
    "nonce": "0x817678e45241a186634d986743497fdf9de6abb9b6f6905d893209ce9423434d",
    "signature": "0x516901054d740f4904bcf16c8b052740cdb1c10341e9e007230da094930e2c8c276a676cd48b11a7a623c1bf4fe053d95a22447509d85f5ecb19c9abc10bd1431b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}