{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "844588084",
    "entityType": "User",
    "nonce": "0xb9c7e08d91a130d7fc7fd5e5966d8e1d92dacc72b39084b179a51ad3ed13e202",
    "signature": "0x4834528aec3e953647e8d49cfb2bf5da9abdf66c6a9e4f46b280209ad978424276d42006f5fd781bea39c22335912330175ac27bbf260ce0b19f51f061baf1931b",
    "signer": "0xc75b2F94526730197DdFe44FADaEd9AbA490032A",
    "userId": "229850481"
  }
}