{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390804",
    "entityType": "User",
    "nonce": "0xb4a1385d018096e90de9af5103a525ffbdb3c45f9cfc2ee49a357f7016619a5a",
    "signature": "0xdb916cc642edfc676cdff4a7be5fe934bcce6b9dc4fc0041398b9d159affe1cf4cebb38f29ea9cbdbd24fe816b3b98043c5898e69841f68b6004800f115050981b",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}