{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7251e9b9786c36ca3e549d1404f429fca57fecbe41eaa3ced633c0713302dd5d",
    "signature": "0xe151696722d507dd24ae7df8f81eb3262b55b4527a22f51c1b5ddbeda093685e500749ac32631637f4badaf7e7975e52ea736aafdda8f2a9ea708f7a8961f88d1c",
    "signer": "0x663E758f7F7dbe9238426d0B90CC89F99e9BeEeD",
    "userId": "90058254"
  }
}