{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343301",
    "entityType": "User",
    "nonce": "0x1fdc2c9603cfe4349879bf45a7c21b3b13c5eb275b133cfe0b97120b3e66510f",
    "signature": "0x32e34d4251f3481aeed5f0fa3272b408b6c3ec2eb5d21b929a2b8c021522dab217ebf8f336b918459348ab7b960d123cab88f9b2c9c5a6901d962addd0a25b7e1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}