{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "280558715",
    "entityType": "User",
    "nonce": "0x538b426e6af34a6f5657aaf71356016e135edcda5e334070249ec19515fa8917",
    "signature": "0xc0f772a10a6ebe7e0a441902182e7d6bd4db64963de5e9664b6d9fe4c02d28840065e4949630147ff337621696d83c06c99bb821624599f117b9caf2567ab3811b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}