{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5e44de6ffa216608e4723a702f68294e466ac46193f6dadbda80bd7691d6e88b",
    "signature": "0xd6a8f1c354d91a38ee9d05a4c3617ef9582f8773748e67b990137ec55f98a63d47cb3b667589d801c9ff9e69948e009e1a7d2ac78fc90f9ef4db02a9f3ce41051c",
    "signer": "0x3d8c0Dc40346b5a45Ec3b8169abB89F297E0E50B",
    "userId": "375887061"
  }
}