{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "737872723",
    "entityType": "User",
    "nonce": "0xf8d2fbe320d35ff323d1750ae4f5a0e49619d2a19f2f24bfd2a10a096730dab1",
    "signature": "0x9ec88b211c5dedae4cc000bd3be16c79af5b2c2518f0b34e4951fb43d2829283522216a61d2ea51459155b6a4b066af1a5f24dbcf89b80f1d50e17908a477ad41c",
    "signer": "0x9b6bD4505e2bCfA88acc8680F463a96DAddf1d0d",
    "userId": "213208842"
  }
}