{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "512214950",
    "entityType": "User",
    "nonce": "0xe1c662e32f39c8965755e24f44cf2b6c893c0a10a532c198e33dd255bb9b2607",
    "signature": "0x3581e04264cfb6cc5cabdbae154cf02911072275227929f62b44706289b84cc310f1d3e9ddc6745a4391cc3ded02e69512cd45b253143b7c44f6562c08e9d0eb1b",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}