{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x68c3f0c523c153df9ddc89aa9c67045bd6d6af3d6daac01979deeb8567b130a1",
    "signature": "0xdcfdb9256d438911302bdecd87ce3b717363796866304a05724cf65db049908a753abbb0d8ffcbf32162f58d426850589fd6c75ad92ec138f674c860e121ceb31c",
    "signer": "0xD3e7Bd31A956934D925C23bD6C3C5EBa102e2442",
    "userId": "438585427"
  }
}