{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "399133",
    "entityType": "User",
    "nonce": "0xeaa01598ce3593b1db1c9746908f95f1891446928c15ef6e2e5f0f72e0d187ee",
    "signature": "0xf28fc0714f4ecd6b5fb6c9b3b924ccdb632274fbad68262caff8974f874285114afdc3e69c046b34fcfd69aaa4ce90db4068ca389d86c5c57ca4f68038165d7f1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}