{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x0e0fab423c595e008d5435b973c4a9d6769799e335f37359919027397e9bb277",
    "signature": "0x6cdf1aff96a657a3deb918094050a831193053dcdf461b6960fab8adc2ec391e6f58ce7bdb15f266f87780231754a36da0b52b083cc20008aa96870f3a0a00651c",
    "signer": "0xe58F2D8128273F34a65a7d2cA9D026e70185D1AF",
    "userId": "391333792"
  }
}