{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3939",
    "entityType": "User",
    "nonce": "0xcbd6bf11c748693b4d95e69247845bad2018abf08cc58f5ef5a2f0b72542a539",
    "signature": "0xcff806a3ef87054288d0592dd993becea3563ff7aa039313226ec68c138f29d50784bad5a12c02062514306ad8bc6fcefd5c86092655dff19f7c348047d8f6951b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}