{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "939113546",
    "entityType": "User",
    "nonce": "0x1abd43b3c139366e777295ce7caf29dffd1b5ef45c36f2f04b1f581b602fe326",
    "signature": "0x1655bcdee1303a10bcface7afdbc0ecf56f666120fdf7b3fb80c1ceaf742a10318e3fb0cbde2a832372cdb0cefbfcd6eb5d982ea118117af6795af57fd30b15e1b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}