{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc2448ce803266426f9c77c6c3ea3311d4492e80d1fa17f69cf46fb0dc347772f",
    "signature": "0xe2e83e3f45af20ebfa8f4722ba6ba0287171b86bb19ea143c8c8c1b2cb590ff37ffdc991283630f6c7870fd28c8473e5142341319e6dd60ccb2ef5d8226dd2c91c",
    "signer": "0x54beFa24e0ADb3E5a9f02Dfe043deD7f67334f63",
    "userId": "19278730"
  }
}