{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "904405512",
    "entityType": "User",
    "nonce": "0x60df306cc678ea925b448501cbe51d52f25fc7840822b698a941e70c283414ae",
    "signature": "0x7e818941907168d84cf2f4868231acb3b41c20f2f9338149add0cda68578b8e85c8f5faddb999335278b34c874ed765f9ab68172869a449345ac4c5f4efba8b11c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}