{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1438540",
    "entityType": "User",
    "nonce": "0xed914d1501a5b38130fe2dcfb6807ab387702e169094943093afacb263f5306a",
    "signature": "0x24e7ca38ec9cf2e300c4258560b3e74521c66ca052c298eb85b2c8b9f0d789767e062f3a7cd0d24043d57b6d9bdf89f926c07031f42aee55938cd9a362889b891b",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}