{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcf0f82a066b56537dde12466915a87bcf370d02d973c74b21b22341fc9107282",
    "signature": "0xc4f8dfe78c967bd5515f8e21ad4c57be1251dacdecb5f43c0fdd67df041789a61710bd1c4ac610ba6616bdcd77d5587ea48bc47dcf5368144ca1e99e8a32a4211c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}