{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "709633854",
    "entityType": "User",
    "nonce": "0x41c4f8a5091067c15fb0e245bf303e7714b57db139d3880cc68444e35323a037",
    "signature": "0xf91e3e74fe4c9af7132e5e54066d56896d46dbb3505436a1ada2fbb8470a564942300a437dcdebe18646792e903b07a340b4a37413a3572988ac95c8c2d1a5821c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}