{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343",
    "entityType": "User",
    "nonce": "0x12a68f3d098038b38c347a25a52949c7fb094abee8526088beab127eaadd2e06",
    "signature": "0xc05205243468cf7608061f67ac24892ef39b52785b8bfea4aad42f48d3fd910d107d7851933f4198c5c4bce7db55a21677cbd33a5dcf1975b22ed15ef0a7fb791b",
    "signer": "0x16BE3cc7Ee03C75AD10a94fb7234B045D351825c",
    "userId": "66529124"
  }
}