{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "72989",
    "entityType": "User",
    "nonce": "0x10bb1fee3668f77939aea7f2dca35a7f30f2ec9138c54f29be03c89a93414c3b",
    "signature": "0xafb4de24adac834f6b7d5e56c7b00cec5eac24eb643b62141b73d8131c8dd30545c87ed235b049075267183f11c770eb0bb885b8371e7364e3698a375d8f97311b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}