{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10449019",
    "entityType": "User",
    "nonce": "0xf6aad8cc82afe7fcd66214c9bffbee3e8d11cca81e35ac0868b0fd1f50e93a45",
    "signature": "0x290294afcabb1ed2872d71c20218299a4938d8756d2df5248a90b222e45c5d3e20a9f8fc6c855b247413c8c95c30d8c41dc072761a2816b5ad74b20d2160cdbe1c",
    "signer": "0xD9A9ce288bCAE5105Ce96746a6244b77B7fca77c",
    "userId": "8662"
  }
}