{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389780",
    "entityType": "User",
    "nonce": "0x7f6340551097f135a54aff1cda5976e88d807da0cac7bde9a6706c3049b638d6",
    "signature": "0xacbbe6c1545761ac2901f94633b43dda4bbcafd29ae531b8c1ce06e9e5c7ecff3bbefa5b312da406dedd17083c2a962e6f295893cee3bb6dd4220b3a8bee00a71c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}