{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304717",
    "entityType": "User",
    "nonce": "0xc1c274a36fea5b6f87737ff53d2fb325daa4aaac72cc0a13c514d58c5361b99b",
    "signature": "0x773313155b5cb4540ca82e017c582ad8106ef044b73f3796fcebf4a424870fbf533d4726cb8ba95e5a2834fd6b28fc52f959fa2aba9abe2abb98a4ff771383511c",
    "signer": "0xE4c0c73a0c0CD7f65f1bE942f8127c8753aB89D9",
    "userId": "857284925"
  }
}