{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2d3c537bd311816b55492f80ac1286cbb84e01881c228c3919743a80dbc66da7",
    "signature": "0xf199b4aac3cb2ed974626af1818144a00339cb91d634840b026f55647d1ad4927846bb2a959ed054af7d81251a89f14fcdc6e513d1963c3fe697b458f1263f0b1c",
    "signer": "0x28784a74C0875faa0083d51DFd55AB12Cca6b3Bb",
    "userId": "493506106"
  }
}