{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13721",
    "entityType": "User",
    "nonce": "0x78b499aaf7357177d833c01f26be2f029a035f5052f9737c8d89afa277930ebd",
    "signature": "0x1e722e39a076a6c71cd87441b8d598b1177af42bcb1835cd4a6afe5ce2c191db4bcf558940c870f0d022c8c7ebf211b7b814b94a4dd5a6d740b528b751d7749b1c",
    "signer": "0x926F8d71a7109CF6Cce00DA74e1BcF50aAf63E8b",
    "userId": "358546053"
  }
}