{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348740",
    "entityType": "User",
    "nonce": "0x5ff89438b70ad05bc73a414d1a3c5f950524f4776eda123bd39f24d84f1332b7",
    "signature": "0x8b40e836da47b267c97323bc4a641ae58313567c86d9c291e08e016af5e9643d6bb61969a6771f3e0c16e11998064f9159018c5c4824a3646466d574ba94e5431b",
    "signer": "0x18356cfD8fCEF0CfA9c1317D9538cf9f94734021",
    "userId": "855397745"
  }
}