{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0xd0e27b533cd423b24917c04eed4964bc56684ef2ce2752d6f6e4fd5980dac116",
    "signature": "0x17e98d69a00a06d5dfb73a042f14d473bd2d06d2c8c6d8a5d382fb76473bee9916a08abb35946923df63a34f4c318fe58d1ecc11aee4b6adb269b4e8756034e61b",
    "signer": "0xCf3E6F9F4BF41C4e355E01484A92aaf61B6dd8a3",
    "userId": "149919577"
  }
}