{
  "manageEntity": {
    "action": "Save",
    "entityId": "1660167284",
    "entityType": "Track",
    "nonce": "0x4417feedb369af137ae8273fc425e2e375b1e3a3e3b2e4f267051427aa825e6a",
    "signature": "0x407c5d8b1a74c4947cb2fd6d660304a054be4717eb9057846a912c03201626bb3742ffcca48ad5edc4d1ef1e4e6eb1ffb61e1307766d2b02d2000f8ce389f9191b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}