{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5b6975a35c8c2e5856b850312e0fac157a2f4daf0a45da3c4176e6d535b1f631",
    "signature": "0x3c3ad56a19fece144ca43f8438da6ef6b41f6d2663dee1d77aac1333dafb8497227b317b8112acd53e28e3b898e8196e9c4683c6f776fcd315d0ab61958d96531b",
    "signer": "0xF682515F1Bc2F663160bCa1CAfc22590942095Db",
    "userId": "258782633"
  }
}