{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "103819",
    "entityType": "User",
    "nonce": "0x1c6ebd8510c51856a2d974dbd14167cf140f67e76df93b6fabfcf1bd5eed29c5",
    "signature": "0xb4b20f9a9849f7da2ec9c6c57c35535a4527fb3c2d65ca41354fed1b15cca89c1639f85339c9bc07df2c4fbfa4eeba4ae64f63b5d21e03d06da03f54f552e9101b",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}