{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "250281",
    "entityType": "User",
    "nonce": "0x4043fc9ffb3bdefbfc7dea816cb7e9170c4b3e9ff30ea93fdc7cbf5ffaefac36",
    "signature": "0x1a0b7c4cc171f0fbc2b44274f1c46e6fbb4eaa85d8eed65f327904db32839665218a58ae0aa985fbeb62921e94518473f86746bedef2020466ee3c5c3c826ddc1c",
    "signer": "0xF52b3db4aE75Ce7f9960b205CA697a1d4302B6E1",
    "userId": "85746096"
  }
}