{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "735980234",
    "entityType": "User",
    "nonce": "0xef9d32203642183c57cded9f2c218cdcc44c339c061546113b377057ffea97b7",
    "signature": "0x64044a8aa8a4543547b2485947c309f99a70584f34d7da7d5cbe54fcd023f28b07fec6f61235780288b73105f7d53ded350df66e030984c910e7ce9c4385dd841b",
    "signer": "0xb68FB6A5ae9015De46D9634e946c04517523Fa43",
    "userId": "134619804"
  }
}