{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x2456d24e97c4222ce58a6c260374e6832746db67fcd499ad0cf4f7f5248e80b8",
    "signature": "0x5078fc6975560da980a03bc254802c8caba531c442a248f8142dcfb6a91122336d9d42210a75a973c30b44b6adadd47cc370252e13544dffb40bd75b5e6dbc911b",
    "signer": "0xc8b59C26109BC380ABC47eBad3DF1FB7d6aBf13C",
    "userId": "37821039"
  }
}