{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "81687",
    "entityType": "User",
    "nonce": "0x7dbe999aaf1f2fec70754c0d4a66605873e3cdff2a9279675997e38d7214346a",
    "signature": "0x4c7893ab78dfa0e87d684b731a5edc3ef0a014f5c0df047f6a33aa3a829652f07d202c1d8f00cdc57aa0b6e17eb5682b36e4052f56737353462f75d9632e63051b",
    "signer": "0x766Ba5816f1Cbcd9649d3b301b8F423CFF252fdb",
    "userId": "758745"
  }
}