{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "108203",
    "entityType": "User",
    "nonce": "0x75b5bba2adfed6c1c3bafd331fcac130567911ff4221ebddd772c1a769b197f7",
    "signature": "0xb3ee37e874d493e1702d68ea522e0c08ec62825ebd542a3a54543af352b2b74306618773065a931e43669cbd5ba43ff7e02888087e770bbe9df4c284fa00e2811c",
    "signer": "0x7e2C8233D27DBd48c0f0420a1c278a887c4A6ADc",
    "userId": "532459140"
  }
}