{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x94584a0873da6b065a5cc63072cf78f338d08b51224c3e618fc2978246626f75",
    "signature": "0xb0c610e352cdbc2f0c8223bde63529db72cc2d5fafee8c92778978ee469562222a8224ad8c8f05c4c115389b817fd70629f8d8dace15ba191c7230f574c6b0d01c",
    "signer": "0x14647618553BB8A26AceAE7C85dB5b376300dA8F",
    "userId": "999002860"
  }
}