{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "641172",
    "entityType": "User",
    "nonce": "0xe25a04291817baea52e0aa2015dbb0de69f734ea739ac7805df2dc05d44f7617",
    "signature": "0x2858ab7932b4604b3e6277188c64525b906b0bb46ff0d7acab9029f28340208e5c702e05beecf4a83d290fc16437cfabb5701f5e129bead96823be9a35efd7351b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}