{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "100403",
    "entityType": "User",
    "nonce": "0x3b0727ab83d555464c26ef97f1488e6ade1225c5417948043de379529d7dfae4",
    "signature": "0xe0c3aacc755cb86c809b02f0e598a609677082059b68ca6d4446e390c84265344f8615bac385a0e8b998c2b34a7903b53a7806832cf17fe4291144d3f910dc5c1c",
    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}