{
  "manageEntity": {
    "action": "Save",
    "entityId": "1168451634",
    "entityType": "Track",
    "nonce": "0x5fd5a7787237dcaf60440a18ade53180bf166486be6dbe2b217bee3ed635419f",
    "signature": "0x8aeb6223dd2bf7685862486383910e0946a36f9e0db6ba2314d847d0d3f2b282405daa9ca8ed71acdb98eaaceb743a9e11d3a366514ffb3608a8020c9b00e3f01b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}