{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1346",
    "entityType": "User",
    "nonce": "0x1d6ffe9dff1a440c13bc1ea0012a345c63de3179b2d9618d1a8a521c306ba549",
    "signature": "0x7811ac7f92394ea5b34dd65fd809f230a0575790580d07af69b1f4d6ffa3ef77263596ab4e38ca95c7313ce85c34939fd44af4290d20760ab7c9751afe9b87eb1c",
    "signer": "0x16D3bf5a80bAfFB2f1550d49b1203D4CA532DA1C",
    "userId": "1994482"
  }
}