{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137418",
    "entityType": "User",
    "nonce": "0x7b91f4ae251842035878347cac7b3a98c693a592c9ce3ce8a39e90f47205baf7",
    "signature": "0x5210b557ad89ed967edbcb4be609f4ca6fd60e9971aadbe82b89183a9a6357f80f495f532bc9b386519b8c5d5f64a7b555d033320bc21ddf54717eb80796429d1b",
    "signer": "0x044FC5a5dDb09Fd969Ac4aa606CddF360FE384dC",
    "userId": "144585121"
  }
}