{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "584616263",
    "entityType": "User",
    "nonce": "0x94f621e5d00788de9ed88d8dd28099ea03445dbeb710f08b2e3e1658b5cd11df",
    "signature": "0x1f570641cc1db9b112e4f61d1106d3c14fea0a770faa53d1202686c8747ebd3818061d1d4252c3a51e93397376313f3b162ac900cb34bb1c6a492f3300fcf0341b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}