{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "676581728",
    "entityType": "User",
    "nonce": "0x8b9e4a095ce3fd21828b8adc74651d0dc7b439dcf12091c828611b6a14d11d5d",
    "signature": "0x0ad7714c1f60836f432f0bea9c57741e3fb66961861d9464f4e3cd9c5d5b6bb716df1adc2371b05ccbf056e92a05a06c89f0e9947c15e1b7694c1e8b9b67204b1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}