{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x012cc31e2e5d9708f07c2e78db56122bcca1000601f324aeed79322212d43a55",
    "signature": "0xeb43c7fc6c1e9669cbbff3782803e7e66cce11debc664a9496ea93c1fdbf613049b67940a36622d3f4fc2f8e68571779bd2506ac835bdc6f34e76b8ef59882851c",
    "signer": "0xc95EFE880463dc9E6fC74760701bBb0A05704C9c",
    "userId": "95927626"
  }
}