{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "873323",
    "entityType": "User",
    "nonce": "0xff863ec89669b956a89118f196dcd60d310a23e92f79b296eb27454a22edc129",
    "signature": "0x421b2456b55d5fd36e55c30a9eed41aae35e15d3f48b3337bf8a07cb1c317c370c331d6931c599aa2379e563673e1db54dab8529d307c31175d007ef74f9407d1b",
    "signer": "0x49368dB15B9A78dF090195AD4338818bfA70C88A",
    "userId": "381576190"
  }
}