{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540848139",
    "entityType": "User",
    "nonce": "0x2508b5c1e67c5a5469de46d005a23ba8e7d7ddbaf444decc5fb5c01663e9c540",
    "signature": "0xf455460d4f1ddcd90b945843a20ccdc14e3828edd605af97c913a0cde1d4300f4e9c73069db929f8c7eef4addb5602b41e1f2ee4698f44263a6ac9a709a624ec1b",
    "signer": "0xd85E4A094e4C057572A9D525C9737051A17ab609",
    "userId": "696716320"
  }
}