{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "283478",
    "entityType": "User",
    "nonce": "0x82b6529ae8f7a170e9f0d03dc5a94cf1599e59ebf7a0aed0fb5e7cf4969d743b",
    "signature": "0x1578da5607f64361fb7d88d8f0bdc3279b448ed07e186dcb0b6d80d71e134b110d77c4960f7f71f799738d252af282c66c9a4d9874f697598b20f26b310332a11c",
    "signer": "0xfC070d9d02c152146e3D1B2cD4B03FD7a3CA1AB0",
    "userId": "539537193"
  }
}