{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51601",
    "entityType": "User",
    "nonce": "0xc453cec9bc5d52cb7d2a44f904cdf2edd454dfc84fea320e92adb9c3c0fe9331",
    "signature": "0xcfffe1e733476034a4a79c58dfc32e14fdd2aa87d483e8e36bf9906fb6c8ad8327958e2e455c300d889d965a4698a7dbde9d4db8aa36d9599c9f5edd8bf908691b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}