{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfb548bb8b8f69c249b40d24fb70f6278108a41eadc0fc58754a38f248b71a54e",
    "signature": "0xbece5b7278cd967f6dd46ee08264107572338d5057228314f93ed4c66dc360477efd213ab38cfe734eb710b10bd59bc24a7a30db77e21f1d596e164d680b3fb01c",
    "signer": "0x0E491F52f82815182fa02FB40bD2F154a87fBBBF",
    "userId": "873019989"
  }
}