{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "864677",
    "entityType": "User",
    "nonce": "0x15490dc722e122491d36afb119e8b032f09f4d7221c865d15a1366f06c58ef3b",
    "signature": "0xd3c3cb7a2c4a8e07b412896fed4e9c83755a70f71e62ed0c91d58ebef0c57faa721e3f5c068e215076fe900b6bf423dd0c69ae24a2f4f74c2d91f69f3a834b351c",
    "signer": "0x49368dB15B9A78dF090195AD4338818bfA70C88A",
    "userId": "381576190"
  }
}