{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "300990",
    "entityType": "User",
    "nonce": "0x8633feb4c2b6b0a9d00306b4227f5586cae823d17e883941852da74abe2ebd04",
    "signature": "0x3dabe91803dff551b23e4e2dfb3fc7f02bd04c95a7961fc58a21692f466db670790bec4893616ba419e468f1ec7761346929120a2cc9366e072b742a2a6cf7fd1c",
    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}