{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "485987672",
    "entityType": "User",
    "nonce": "0x434e979e96af0ed4724705d76a209b8b7c602373850d2fe3a56e8de23d0b4a42",
    "signature": "0x8bfffc3201d54d789a84e9976351aa553753dce7c3caf0aa3add019dd9abec44487a92a7f359250ae14a16f0da40de5bd0f04257c31a47f0a28fd104155efcdf1b",
    "signer": "0x2d4E313C5C5BBeCd31f664627b0a91361e5D04D1",
    "userId": "106406"
  }
}