{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9934e26d43c0b3c682e880dd66416579648e8af5e4a6c53499f04bb4b763b3e1",
    "signature": "0x585e6e76ccbbfd62b2dd33f0a36b95b67a1f939626dde07dfaefbaa88286d14238793a129c6aca41665a87d1bb0086a4fe63efec5905f9735718479d4f6f7d231c",
    "signer": "0x01500534dEA9F9d4bE087b2923047808c56C494d",
    "userId": "907127231"
  }
}