{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x493853a0004ee1139215e2ff6a01891fc6b238ff2825903f0861b071b9cda61c",
    "signature": "0x4d9c15263f1b7a5a02a00dbf9220da830ec2eb314333dd3d94f81fcadd4ab3f10094fac4507b8b27dd796371cb16acacb0d93852634703419d544dea601ef2951b",
    "signer": "0x72C3229e8a009963fcCB987460463895a2989d71",
    "userId": "109371348"
  }
}