{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325",
    "entityType": "User",
    "nonce": "0x2a11a2a3ed4cc0d96014f05f94dc239f27766018ea7fab1e6a3179dac7493b47",
    "signature": "0xe3b36434b9144634576f29948c8a4b192c97cd02042714079b98c28af8e72d786368358acbd8ce1a9257756b5c3532cda1af9bf4132266f156274c4d0b7524d41c",
    "signer": "0xa6D0BAE79d3275078b32CE786801f4fFD9cEE7b0",
    "userId": "305241454"
  }
}