{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "72850",
    "entityType": "User",
    "nonce": "0xa5e095f010415ac447d1d65b55dbf6a31b70b72c78e86010ef1a1c74ff9906dd",
    "signature": "0xf2b6fe0c994038e06c832ff1313d9017ed3f4032bc85541799ed1f58da5f943a363c485ce7ebc485f05a4f1d2da05d89f7da7b6782d9542dbfeb61d1af8eea0c1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}