{
  "manageEntity": {
    "action": "Save",
    "entityId": "1169344021",
    "entityType": "Track",
    "nonce": "0x959ed27e0413834aa6615617e481acc55cf51e7f3a55e2f6da5b3189c6afeaa1",
    "signature": "0x15670a31ec8519e69d09715eb85fca2565fb55f446cf18989c288daf83911c696b2ebc439651dbf770ab7acc2c3d81f72308a666d127c0b26205663b1038ba8c1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}