{
  "manageEntity": {
    "action": "Save",
    "entityId": "832945256",
    "entityType": "Track",
    "nonce": "0x6ba58b1b5669baee0a98fb3d3f09c3b50f573ce30290a98b2a7422ad435f8cbc",
    "signature": "0x1a97efe78a30d0f1c5cdc14dab86f5221678b0a713e9e699372538fa987bfb473427d64c06b10477a50b97f48a706a1ad0563c148e151cf620a12b8a1c1efdde1c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}