{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "383930",
    "entityType": "User",
    "nonce": "0x1817f7c85b47eb33c163c6f702d68db89b3f58cb4229d6ba2cf40ee53e9377ee",
    "signature": "0x6648103cd6dc89f06790e3bbdfc3bd4c8a2a7bf3ffe0faf60c8cdd9be18aaf653e26f0ad48c1847ffd1e4a8873b7e396b672642ee271c768b12e8bde1907c0ab1b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}