{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "634339279",
    "entityType": "User",
    "nonce": "0x1552f8af6d43f6dd7dcd37a0044594bd13fdc290b11345638a6cba945c94a63f",
    "signature": "0xc08e016b88965972cac1e229e44b7631f5dbb8799c3e147a14ff7ce35ad5be472961132f404adf2b53c70a6caa1996286b784aa4a9f532bc841d852d7622b1581c",
    "signer": "0x20c238b8C67292B74399B705c8Ba45682d3854D3",
    "userId": "751451"
  }
}