{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0xb8be6f6f3dd25fbc184047cf7ec0a637e325ceb94500315c3c248eca4a2c5f9b",
    "signature": "0x1a002d0a4a7da9210f916d594f3ee29fd19773bb1b1adc55f4e9311a9515c2ad5c95850242c2ede844152a559b96d313e64f1d24056a61ee11c6462047ed77d61c",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}