{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348772",
    "entityType": "User",
    "nonce": "0xcbe81aca3cec7250dd67424c73a75d105b36a43f74888c377af66fec81a7313a",
    "signature": "0xcf5221dae32440255c9a4fb35660e359663dd5d7ab6c12d5376301b163bc3432297584a2d0a4cec1e754ca06977107bede0934582d584e6556528c6dca6b25641c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}