{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6d36ef90194b6bcefa2405522760abc35e8f3c170cbd0477afea7de86a4e2b7c",
    "signature": "0x52e1da30b8059683d42d9ac09d578aed748879ccdc61e4cbdb3c5d83810b9dce74cb60ce728a2d06fdb594c8bfb94a1a7856a3267d18943672cc9d83c0e8b0c01c",
    "signer": "0xc504f145DDc6571520cf69963fE6ABa48DC1E776",
    "userId": "54867432"
  }
}