{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "17102",
    "entityType": "User",
    "nonce": "0xf1c724d7c59811faade74073e1980e7c75285f6bc6fc9a8ccdb5d2c5643dd4c2",
    "signature": "0xa1ad13be18f96d4bb419dc6f44d2f3237b84d6f694fc83cecadd218a563ab3802e310ea9fbf58beeaac22a216959cc9c41c72d4e0005941465b3dc7b674163ce1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}