{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "328228955",
    "entityType": "User",
    "nonce": "0xb7a2e9bb565ae6b98bbfb1116f69e83c78a8f5300a9b417048c0925f6634a475",
    "signature": "0x7f4920264c993b8067540b9669521464dd395d1d84ea2b4cd17e6cd7cacf5def66e1f40e012fa4714ef951482ed41186748ff472eae1427512ef600e9bc252fe1b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}