{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "714646433",
    "entityType": "User",
    "nonce": "0x6af178da945957a973ddeb2af8d4e1dcc62926f2d8645868ebc97d064d925a97",
    "signature": "0xf098ddeb6e2d4f2c0b9547577796b315e42155b01bc6c6f819ab8e386d1560ae5895ca5086ef0cce90f8db1f630281e7ca69cbab9fd35bc8eaf563f140b11b1d1c",
    "signer": "0x854726bE5910ceEe19fBd2D4CE0518966CA41382",
    "userId": "124312"
  }
}