{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "102143",
    "entityType": "User",
    "nonce": "0x67f639fa999cbdfca8b7641ca06434f71e53e5ec2143ce447c5f2ad0289749ec",
    "signature": "0x3f68ffcd1653896334057eb6f2734dec39a2d1900a903e9d1865a97ed7e617576d445268ba62ee80b1610c5f48400c3eeba12cf4b8d1d60bf3ddc9e37218115c1b",
    "signer": "0xC90e14007305577f04e5F4f5542B2191bB2c7394",
    "userId": "1856608"
  }
}