{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x817456d8864629be7c88001978deb1bccf70a8123a7cd723b4b59b54dece723c",
    "signature": "0x59be18e89bd3a6e084d754c0a337f8dca0d28d00af5c3508ba2a2896c4c8326c5a74ef3b102ef3e36287b8753637a2160e60a5e67a34ca85e70e5eaa60e296e51b",
    "signer": "0x785343dcc008938B9B79e332EF016228A546dB33",
    "userId": "383560128"
  }
}