{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "320356",
    "entityType": "User",
    "nonce": "0x5c9f320e8325b26cd6319fb7e5847fae6bed9e66cc77e963f08737e3d810484f",
    "signature": "0xd0dd2463680584b6c018f69244f9f0ef1bef5e9594b1a9626a0546a41aca62270f729a6ff32ddc6e4fd56d664f10b07150dfca5b052c2bd23fe664cac4c4b9d71b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}