{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1",
    "entityType": "User",
    "nonce": "0x0be3fb9de72422866b88afd9cc5ef99e6f6e853fdc8cc4df266ae4ea57683cbf",
    "signature": "0xe421e43c8fe1ee206cfd535d8f54cbb050fe07870ce9919456fa2020e999c30205e1ed32462447fabf296e09637fbe79e807de5eee29c9ae37584bcd06201e261b",
    "signer": "0xB8c3568b782eb49a6ad099a677859E9c89ac409e",
    "userId": "428635"
  }
}