{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "966718637",
    "entityType": "User",
    "nonce": "0x31acf28180924e14df09ebe8f473f1098b013dd9932dd2fddc085a56ee2508a7",
    "signature": "0xd2ec71f4320380e7509e567c459826afad8087df5a916d39d3577dbb13c50da614a99391f6438c195dfb469136d67d013d56f6ed07c80a88278bd607af55d0e31c",
    "signer": "0x40373Dc9acB70c0cEeef7e9052214af2984813FC",
    "userId": "547729545"
  }
}