{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121646",
    "entityType": "User",
    "nonce": "0x71d3e490fe7eaa3214a7e7aa986a40187ac0b634b7ec2782053595b9842a6448",
    "signature": "0xbae8d0996afdc176f956e57fb7733ee97d35e062eb7053c89da2f3e8bfcef4927e11afcd1622e988fe9703b671f508521a13fac450ca8b19fe54085a8f14f5c01b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}