{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0x60f5036ef79ff6e71a886c6939d17d3ced8e0e96e4351827635af864d0aa99b8",
    "signature": "0xeae72d330231e59be03e16adb1b278a103ed38842f38258343db20f44bec081b4e42eeb5d7faee9a7afdb2783cb8d9339cc1b8145a9d014acf4de71c7d103d721b",
    "signer": "0x59b6242FE7db035cd9545ca205b208b5fcf1CC4D",
    "userId": "806603339"
  }
}