{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508186998",
    "entityType": "User",
    "nonce": "0xcca7c900ae0263839f610f225e4f3d59faa3dc743ba25707734f1f2b62276bd4",
    "signature": "0x035b5812ef9480828889895cf22c845f4951fa3781d41bb67f9168d0ab7e9f5d4f08a73ac0b80533021e3c539eed696110d9d42bb528dd02682ccd6ed958f2131b",
    "signer": "0x2B55314d733BC60522711F9B9914f271d97aDD6B",
    "userId": "224685891"
  }
}