{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "303143",
    "entityType": "User",
    "nonce": "0xe40556bbdd38475e3341d787ac9fc855034bdddc32cdac92b8153d541691d01a",
    "signature": "0x84dffd39148bbe3333699de92d6223694118f0c6b0d20904a6315171558e1b52586e3a9b166173fb6b1e26e94bd17fd60a72755f45cee196eef073d9261725f31b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}