{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x641df355d07054fb1ce9fa7ae8ab3409e3f2cd020725a7a42d28ebef92f0510b",
    "signature": "0x0799ca17317d96c5be97a728f28ea7fb3382197d71e2ed7bd702e563a1f790d3065342d87b0a4e9d644e2c2c389de995277fbb100e222cc2187fe3cfd22d99ba1b",
    "signer": "0x9839A58400806f7D2fb091DAb067C1c725684BDa",
    "userId": "66342"
  }
}