{
  "manageEntity": {
    "action": "Save",
    "entityId": "996555479",
    "entityType": "Track",
    "nonce": "0x90505cf14579341c8a2d3a3aa8361cce2d468d00ba02a7ce393cb8a188c77c8b",
    "signature": "0x65cc591d9b4f10b5e90f6c9c5fa188314904ae8e68f0f9ab43aacd8e3763c5635cd1d7286f4b881d3099455693f8dd9a0a9086751c8df14442089f3a9addb5d31c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}