{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "603549127",
    "entityType": "User",
    "nonce": "0x4876fbbc0ebfab0cb62e2152bda04dacf9c6aa0f4248c626fd420af9b6b800e6",
    "signature": "0xd215173d8d5ac755d38150c924e275d835749f7acbddba86427e6e502a871a0f689db9d3dea50dc6d58bb8ff6533c3623ef70b517ca6cdaff783661313fea7101c",
    "signer": "0xdcAEaeb1b2DF396B02cDe67B3D030cDf38261A5B",
    "userId": "58531"
  }
}