{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "164450345",
    "entityType": "User",
    "nonce": "0xe404988c142d4c0e351a9b8b063b8af5fb4e5eb709e6db4aed7db431391521c1",
    "signature": "0x95be09e2e74287efafaaa529a75bb0181df17f709c0d0f3e10aa1b95a2e156184b9de88bba03c3d94613b9c1d381d884a96eb1b54013cdc9250b2b1f4f052d011c",
    "signer": "0x530E0389C7352Fb2d85d2CC319F68bC2df8C4392",
    "userId": "874338785"
  }
}