{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xad2cc6f2b37db8a97499e33016c30c7ac269e066e5217ba64e322a58d086c14f",
    "signature": "0x278ea68a6d8c74e5c4a8b14bcf8970aa07df2f087bb3ed5ddf77bf63ac4818cd243455d5a3c85261ce1532d8898c1ed293ccba21680b524ec080209bc5b06d991b",
    "signer": "0x7B25A4061d32b535c314d284DBD2E24068009B4C",
    "userId": "325032846"
  }
}