{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343",
    "entityType": "User",
    "nonce": "0x0b3c26f13e1dec5d108f12e37368c8f5f279bc171d755c2bfe4b9d9071d89c45",
    "signature": "0x63d8b7d93cb1e92345fb8ea6ce0e86a38ec12640ffd94680e1aa6015e273930b5b6f732cfd983e55b5cd00090781773ec4169776558528936c00f1dbdee068951b",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}