{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x91f6de9abcfd75eadd19b5b5eb6a7e30ac2f10f72b85fecb4e972680bd1724b1",
    "signature": "0xbe24a7f33f55e872d6f991727118e5f5575384983e56590e75de74ddb4838fb45c896543196d383facde851556ba9303069060e5b6411c391ddf60afc7999b291b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}