{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "197768",
    "entityType": "User",
    "nonce": "0x2d42877b58808643ebe879e7454fcbe9e39eb533c47e576b03754c0555894ac9",
    "signature": "0x22d57872f0ce0cbc0769b8e1c4d87393b06450d4e849b32ec91cc42e0891c8a162cb17feb599a3bf110c5e38231ed99f4b7d4ebf1516493d6a757507ddf189551b",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}